Ruled out or already suggested ideas
If we get enough support supercell will change things, as long as it doesn't loose them any money or decrease the amount of time we play. Meaning don't request changes for gem/money bonus, cheaper or shorter buildings/troops. Only request for ideas that will make players more dedicated to the game.
The goal for a game company (especially a game made for phones/Facebook) is to keep us interested n happy or we will move on to the next big game. I'm sure u all remember angry birds, candy crush, etc.
Think of it as a petition. If we get the support we need for a implemented change, like ppl commenting hundreds if not thousands of times, supercell will aim to please by giving us the updates we want.
Nothing is permanent or restricted. Laws change all the time, country borders fall, tv shows like 24 and Dracula come back all due to people supporting a single idea.
So when you see a good idea that has already been posted, leave a positive comment to reinforce the idea.
Do your part and let your voice be heard.