Few ideas i had + an outfit designs :3
1. a click at empty spots in dungeon will make the avatar start running. exploring the dungeon without traps active. good passing time to train perfect corner jumps and such while waiting for upgrades. plus this will make the dungeon more vivid instead of a semi freeze screen.
2. if a friend or guild mate tries my dungeon and I'm online it could be fun to see them posing in my dungeon while I'm in the dungeon screen.
something like a mix between replay and and normal dungeon screen. could be funny lol.
3. The king of thieves should have an achievement rewards!
like dying 10000 times or steeling XXXX greens gems
even stuff like XXX reids rage quited.
4.titles.. how about u have a Name, Guild and title which u could get by completing achievements
a) golden retriever for XXX gems retrieved
b)The philanthropist - for giving XXXX gold to the guild exp