Here's a list I came up with after looking around in the feedback/ideas,new feature.
1. Maybe you could make it so you could pick up some swords and then bring them back to the upgrade room. From there you could customize them and add them to a slot for 1 point. You could also make it so it saves what you made, but to get it you need to have the ingredients.
2. Second, nerf some of the endless levels. I know this sounds like I'm a wuss but a couple if the later rounds are too hard too early. One of these is a gold level, round 10, where i got 4 purple sword robots, 3 Mk1 jetpack bot, 4 Mk1 sword robots, AND it was on the pillar arena. Basically, I lost 2 clones because the jetpack guys were always around the Mk3 sword robots and the Mk3 sword robots were always together.
3. Plz bring back the saw blade bounce because it's fun and useful. During a round if you're in a tight spot you can go between the sawblades to bounce, but if you mess up it can kill you. Also, you can do trickshots with it.
4. Make having 1 leg not such a burden. If a robot cuts off your leg you basically have to sacrifice yourself to keep going. Or maybe you could get an upgrade for 2 or 3 points that repairs you after each round.
5. Plz add new colors for the robots or add an option for color customization. Also maybe add clear as a secret color you could unlock after round 20 endless mode or something like that. It would also be cool to customize sword color/bow color.
6. Also plz fix the insane sawblade lag because it keeps feezing my game for a second or two.
7. Sandbox mode would be really nice. Also, going back to number 1, you could have a unlimited sword customization and then have that be available to get in levels. It would also be cool if you could make structures and then fight with those.
8. New bosses would be fun. One could be an Emperor or the commentator. Also plz have the security robots that are supposed to come after you in Story mode come after a minute or so.
That wraps it up for things that I wish were in the game right now.