The variety of looks the heroes have is impressive, therefore it is a shame that avatars can't have the same! Even with all the accessories, everyone in cities end up looking extremely similar and it could be so much more interesting.
A person's profile should say the last amount of items they got in raid.
When a cauldron is fusing, it should say what is fusing at the time.
It would be cool if cauldrons looked slightly different when they have 1, 2 or 3 slots.
More visual updates would be great for events during the year, like a couple of pumpkins on the grass or something! It doesn't have to be huge, just fun to notice and it would keep the game feeling 'alive'.
More shop customisation items would be great, I love making my shop look like a real shop!