I have been trying for a while to think of some feedback for Demiplane outside of what has already been requested, and I started to focus on “what do the character sheets need for a better flow of gameplay?”
I haven’t seen anyone ask for it so far, but it would be amazing if character sheets had a button on each Power that said “Use Power” and when you click it, it would subtract the amount of Focus it costs from the character sheet, rather than having to manually adjust the character’s Focus.
For powers like Elemental Blast where you can spend additional Focus to get an increased effect, maybe a slider or something could be present for “additional Focus spent” and then when the user clicks on “Use Power” it would also subtract that amount in addition to the base cost.