Thank you a ton! I'll check out the stream VOD if/when it's available! The enemy variation stuff was last minute--ran out of time. I've since already made major changes to speed of upgrades (x10 multiplier from what they were to start and it's not unbalanced), added planet size, and starting to add planet variations (gas giants, rocky, etc). I plan on exploring this project past the game jam for a good bit.
Thank you again for the kind words!
EDIT: Aww, no VOD it appears T.T