Ok. Here comes a big one. Village themes. I feel like it's a little odd seeing a town hall with lava pouring out of it, then see a wall with electricity. I feel like there should be some kind of theme you would want that would cosmetically change your village. It wouldn't change anything other than looks. Say you wanted a volcanic theme. All of your buildings would have a lava and fiery look to them. All of your troops would have a fiery theme. It wouldn't change how they attacked. Or a forest theme. All your buildings would be in the trees and stuff. You could also mix themes if you wanted.
Now, a problem occurred to me that you wouldn't be able to tell what was what. Like what is a cannon or what is a mortar. Well I have four ways you could make it work.
1. You just change the colors according to your theme.
2. During attacks, the theme could change to the normal CoC theme
3. You just make them normal looking.
4. You could be able to check what each things are. Like while in or before an attack
I know this is a BIIIIIIG suggestion but it put a little more variety into clash.
(Edit) upon doing more research, I have found ideas similar to this. But I read some and they were just background changes

