Hi. I have been playing this game for about a month. I think. After playing this update for about a week I have some thoughts. At the time of writing this my prestige upgrades are: 12800% cash bonus, 10x speed, 4096x power, 4 lasers, and 210 balls. I am basically only focusing on power upgrades now. I have passed 100 bonus gold for beating a Boss battle.
A nice feature would be the ability to reset damage done so you can more easily see what does the most damage.
I also think you should keep the BB when you prestige. Since boss progression doesn't reset BB points shouldn't either. And now onto the bosses them selves. They seem a bit easy. But that might be because I have played a bunch before this update. Also I would very much like a feature in the numbers only mode to show how many boss lives are left.
Thanks for making this game