Find the metric that makes money fastest with your first hour or two of gameplay and focus on that. Leave it onscreen for a while (hour or two at a shot should do it). If you re-visit at least four times, you can beat this game with an hour of gameplay on the front end, then idle check/use bucks earned/merge some balls, and you beat the game and merge to the maximum allowable (8).
Glitch in this game is once all power ups are purchased to max, after 10k or 20k bucks are banked the upgrade button has a “!” On it as if there are more upgrades to get.
Make the game a little harder and longer than say the 6-8 idle hours I took to beat it, and fix the glitch (add more upgrades?) and this could be a simple 5* game.