Requested troop shopping list
It's difficult for a clan member who doesn't speak your language to understand what troops you are requesting. Plus we all know how annoying it is when someone in your clan starts deliberately donatating the wrong troops. Why not have a selection menu that allows players to request the exact troops they want (and the number). Then when we donate troops to a player we get to see their requested list and can only donate those troops. There should also be an "any troop" option to allow spare space to be filled with any troops. That would completely eliminate unwanted troops being donationed.