I wish the first movement speed upgrade just costed 1, or maybe 3. I am painfully tempted to just click the "* 10 money" cheat thing, but I'm worried that I can't turn it off.
Edit: two other minor things. 1. would be nice to be able to move with the shop menu open 2. the already spawned pixels/crates/boxes don't apply the "increased money/pixel gain" upgrade, it only counts from the next spawn.