• Turn a violent genre non-violent -- I really like non-violent games, and I'm looking forward to someone making a non-violent FPS
• Butterfly effect -- this sounds really difficult, but I bet someone would make something great with this theme
• You are the dungeon -- a literal interpretation would be fun to play
• Grow a tree -- sounds peaceful
• You are the princess waiting to be rescued
• Momentum -- I love physics games
• You are the power source
• Fragmentation
• Turn a job into a game -- could be a nice way to celebrate essential workers
• Outdated technology
• Automation -- Looking forward to factorio clones
• Reflection
• Planets -- I've made quite a few games with planets already, and I'd happily make another
• Shelter -- I like the idea of building a small lean-to

What's your favorite?