Super fun! I enjoyed being encouraged to try out different strategies to increase my income.
My only complaint was the anxiety induced by brain purchases, given that they're extremely limited and you NEED to hit a higher income rate to receive another one. It feels really bad if you made a poor decision early on and now can't buy a clearly superior upgrade to progress to the next brain. Even if you can't actually softlock yourself, the thought alone that I had was concerning. (I suppose some kind of prestige system would fix this, though!)