I'd really prefer more open-endedness... instead of having to collect all 4 pixels before having the ability to collect the 8 ones, it'd be nice if you had, say, 6 pixels you could potentially get, and could pick 4. It'd be more fun if you could save the collect-'em-all stage for the very end instead of making constant.
Fails at the basic test of being a game - it's not fun. Yeah, sure, it's making a statement, but it's stepping on its own message - people 1/5 for a reason, and this is it.
I'd like to see a method of burning multiple recycles at once to get rarer items - way too often I just hit recycle all duplicates, cash them all in, hit recycle all duplicates again, and find that all the things I just made got recycled. Also, some weapons make it way too easy - e.g., that cascade rocket launcher.
Loses some - but not most - challenge when you realize each enemy homes in on a single one of your planes to the exclusion of all others. I love the game, though - had to really think and get my strategies right to 4-star clear 'em all.
Needs a higher drop rate on energy crystals, and spawn rate on whatever the purple missile enemies are called - those missions are the only two things I haven't accomplished yet. Aside from that, though, it's a good game - I enjoyed it.
Not even nudge control after you've dropped the cat, no way to tell which of the bonus zones is going to be active until you've done so, and levels that actively punish you for doing too well. Absolute crap.
Way too stingy with gold and equipment. Since the main character can't improve without them, it's much harder than it needs to be - and since you can just grind for gold, it's crappy fake difficulty.
Fun game, but I can see it getting old pretty quickly. I think you also drastically overestimate the amount of money people are going to be willing to pay for it - you're charging barely less per month as games made by teams of professionals with far more content. I might pay $20 max for a lifetime membership - I spent it on the stupid Artix games - but $100? C'mon.