Censor - You guys must have this thing on defcon 200, there's no reason it should filter out random *****...smh what's the point of trying to talk in global if every 4th word is censored; even when said word contains nothing offensive?
Block repeat invites - Self explanatory, is there something we can do to reduce and/or stop repeat invites from people who are just spamming global members hoping to fill their clan? An example is the clan Dhaka champs that's been spamming me since last night, in a usa chatroom, even though they dont even speak english. It's so bad that i cant even speak in global without a 6000ms delay.
Give co more power to moderate chat, not so much the clan; i've been in 6-7 clans now that have been flooded by bots if the clan isn't "invite only". I'd like to see more clans, including my own, be a resume type of clan rather than a clan that has to dedicate time to find members. Perhaps an automatic algorithm to track how often players connect and then block them at the sources before they're even allowed to send a join request.
Fix the lag in global - see my block repeat invites rant above. It makes the game unplayable.
Alerts for donation requests would be nice as well, or a new building which manages donations for you as i have multiple other games i play, while i am the leader of the clan i often have to bribe co's to pick up the shortcoming or find a clan where i don't have to participate as much. (You could even include the donation manager inside the clan castle for functionality purpose, "Donation Manager" -> "What troops to fill?" -> Check box format. The byproduct is that requests would be checkbox only, which is ideal leading to my next suggestion:
Donation block/checklist: From the aforementioned post, disable all other troops besides whats requested. Little kids are swarming clans in the 20-70 range and donating one barbarian during war to be cute/funny even though it costs the war in most cases as people attack thinking they have a full cc after being on standby for 6 hours. THIS suggestion is a single improvement which will boost C.o.C.'s rating by 10x fold
Provide feedback on the ideas you found useful and those you found useless. Be blunt, i'm not fragile.