The history of amoozing ideas that forum members have brought to SC's attention has been phenomenal. A HUGE amount of those past ideas are what we now see in our game every day, and many more will someday be implemented to expand and enhance this already terrific, fun, whimsical, and quirky game.
However, there are limits to technology and what will work in the game as it's currently designed. Memory limits on even the most up-to-date and high tech device prevents some ideas from being possible at this time. The way the game is balanced prevents other ideas from being possible as they would throw that balance out of alignment severely and make some portions of the game virtually unplayable. Yet other ideas simply don't fit into the very concept of the game itself.
When repeats of ideas and requests that are just not possible at this time push down from sight ideas that may be workable, we all lose. So the following list contains ideas and requests that, for whatever reason, are temporarily on hold.
Threads repeating what is already on the listing will be merged, closed, and/or deleted at moderator discretion, with or without notification, to keep this section clear and tidy for ease of use by our members and SC. This will be enforced more than it has been in the past.
Also, before posting a thread on ANY idea, please FIRST see if it's on this list and then browse the first 2-3 pages of this section. If there is already an existing thread on the idea, please add your thoughts to it rather than creating a duplicate thread. Everyone's cooperation and understanding will go a long way in helping both the forum and the game's future and will be most appreciated by your fellow forum members and SC's Development Team.
SC's motto for Hay Day is to Never Say Never. The ideas on this list have not been permanently ruled out and may someday be added if they make sense to the game as a whole (balance, economy, gameplay, fun factor, etc.) and technical limits allow their inclusion. However, for various reasons, they must stay on the back burner for now.
THESE LISTINGS WILL BE ADDED TO OR CHANGED AS IDEAS AND REQUESTS ARE SUBMITTED AND CONSIDERED.
This thread is always being added to so date of thread does not indicate it's old or outdated information. 
No immediate plans, but maybe someday
Buildings and Building features
Greenhouse for flowers and herbs that can then be sold
Second Dairy or Sugar Mill
Third Feed Mill
Additional production buildings (other than the aforementioned sugar, dairy, and feed)
Animal/Plant/Decor features
Seasonal trees available for purchase
Curved hedges and path pieces
Neighborhood features
Special RSS bin for NH use only or locked shop for NH only
Increase in NH members to Increase NH to 40 or 50 members
List townies waiting to be served (and currently being served) by how much time remains
Town tab (who has townies waiting) to show farm level on avatar
A notation of how many townies are available for pickup
Message/Notification Board
Derby Features
Including a player's derby stats in the current farm stats
Additional, higher point task (300+) for train/town visitors
Farm features
Fertilizer (organic manure)
Sprinkler system (feature - maybe to automize something)
Feeding another farm's pets
More land expansion
Mining other gems from mine for use in jewelry making
Sales/Purchasing features
Selling decor items
Boulders and seasonal trees for decoration purchase
Production features
Making expansion items (either from felled trees, ore, rocks, etc)
Player features
Favorite Farms tab
Minigames
Playing on other tablets or windows phone
Search feature to find farms by farm/RSS name
More slots for following
More than 7 gift cards daily
Ability to organize followers/friends in some manner
New/additional offerings in the gift card catalog
Graphical features
Weather visuals (i.e. like the snow at xmas, but also rain or falling leaves)
Adjustment to fishing spots at far right and lower right
Neighborhood features
List townies waiting to be served (and currently being served) by how much time is required/left for service to complete
Town tab (who has townies waiting) to show farm level on avatar
Ruled out for the time being
Buildings and Building features
Casinos or other gambling
Separate building for expansion item storage
Animal/Plant/Decor features
Trees/shrubs never die
Neighborhood features
Implementation of an autokicking feature for inactive NH members
Being able to see who is online in your NH
Derby features
Ability to collect prizes earned while in an NH even if kicked out before end of derby
Option to buy more than one extra derby task
Farm features
Chopping down another farm's trees/shrubs
Otherwise taking over another farm's responsibilities
Floods, fires, and other natural disasters
Plagues and locusts
Animals attacking other animals
Butchering of animals to gain food
Dogs chasing/killing foxes to remove them from farm
Harm to any animal (domestic or wild) in any way
Alcoholic drinks
Tom fetching expansion items
Tom no longer takes a 2-hour nap or he's hired per fetch rather than by time period
Tom hire to include a 3-day option
Increase barn/silo expansions to 75 or 100 spots after achieving XXX building level
Sales/Purchasing features
Selling lures, lobster traps, and nets
Selling or buying entire farms
Selling animal or machines
Selling back to the game machines, pens, animals, pets, pet houses
Change wording of Trash option in RSS or remove the Trash option altogether
Ability to change pricing of item already in RSS (i.e. lower price for quicker sale)
Overriding the in-game set maximum price
Retrieving or returning items already placed for sale in the RSS (cancelling sale)
Locking the RSS to restrict access
Sale or exchange of vouchers
Voucher exchange (i.e. 10 greens for a blue, 10 blues for a purple, etc)
A banking system to give out loans
Search feature for the Daily Dirt newspaper
Want ads
Production features
Altering a machine's production queue
Removing items from a production queue or canceling production
Player features
Partially filling a crate
Speedier way of scrolling through Friends/followers tab -- "page" arrows
Ability to return to last farm visited (not one already on your tabs)
Bonus XP, coins, or an extra voucher for filling a boat without any help
Gifting or donation of items, coins, or diamonds
Playing Hay Day on PC
A diamond spending "lock"
Triple (or more) confirmation taps for diamond expenditure
Replacing existing popup confirmations with the Double Tap
Turning "off" the AI visitors so they stop coming
Remove saws, axes, dynamite, TNT, and shovels from the list of things visitors ask for
Placing machines, pens, animals, pets, pet houses in storage like decor
Shorten the time a farm stays on the Last Helpers Tab
Remove the Last Helpers Tab
On Friends Tab, the ability to start from lowest level farm
Graphical features
Night and day
Removing fox graphics from the game
Opt out button for fox graphics
Ability to rotate buildings, decor, etc in 4 directions rather than the current 2
MUST READ: Have an Idea/Request/Suggestion? READ THIS FIRST Please
