1. I'm pretty sure this one has been suggested on the past, yet either i missed it or i can't find it so... Here i am suggesting this. Sending/Accepting a clan war invite through ingame, that would save the trouble of opening your browser to sent an invite/to accept it. I know it is not a huge deal to just open your browser and do that, but that would be pretty neat if it got implemented.

2. A bet for clan wars like a bet but for wars and let say you only can bet at the first match of the wars, and you will get the prize when the war is over. (Just an idea that i come up with when i was warring, decided to put out as a suggestion cos why not)