Sorry - just saw this. Yeah, I feel like the concept has a lot more potential than what I managed to do in the jam, so I think I might work on it for another couple of weeks. Upgrades would definitely be cool, I think more variety would go a long way. Also an actual difficulty curve. I really like it when the player has to make an interesting trade off, so I'll have a think abt things like that. Thank you so much for the feedback!! ^^