"I want to click another atom while the electrons are still flying."
It was originaly possible but I removed it because I don't want the game to become agility based. However it breaks the flow of the game. I was already considering putting it back.
"I wish another song would come up."
The music was procedurally generated, it's crap. I will replace it with good ones made by real musicians.
"How do you make levels?"
I usually start by adding elements semi randomly, then I remove useless elements and adjust the rest until it becomes interesting.
Sometimes I start with a precise idea. It can be a ruleset consequence I want to showcase, an unusual move, or a "trap" (an obvious moves that don't work).