Thanks so much for the feedback!
"maybe try adding an option to render the game at a lower resolution? that should help with performance on mobile devices, which often have very high resolution displays but wimpy GPUs"
Actually this already exists in the graphics menu ("Resolution Scaling").
"the robots are cute, but i wish they had more upgrades."
Strongly agree - more upgrades for helpers will be added.
"hole-man is shockingly more of a hindrance than a helper"
Yeah he's kind of weirdly situational. It's great if there's a lot of junk around but sometimes it's annoying for the hole to move when you're using it. Will iterate.