Yeah those are definitely valid points. Admittedly the dash feels pretty lackluster compared to everything else, and enemies are constantly closing in so you don't really have a whole lot of time to stand and heal the generator. Maybe it would've been worthwhile if I increased the heal amount. The coin magnet thing was more of a quality of life thing, but yeah some of the upgrades could've had some tweaks for sure. One obscure detail that literally wasn't mentioned anywhere is that coins actually gain value over time as they get closer to expiring. Not a huge amount (5 base -> 10 max) and I mainly did that as an experiment to see if it would make going for those coins waaay off in the distance more worth it. Not sure if it actually makes that much of a difference, but hey, fun fact.
Thank you for playing though! Glad you enjoyed and appreciate the feedback! :)