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Maybe have a short cooldown replacing others’ pixels when you have stacked them? Or removing the 30 second longer cooldown for replacing your own?
Edit: Two more suggestions: Ability to place Virgin pixels for your own work if you made a mistake and the undo button has faded/you have already placed another pixel and an Undo key (like “O” or something) to undo after the bar fades.
Thanks! I really liked our little space we had, even if it is small.