I've made 2 level editors so far in my games, and one thing that would speed things up for me is if the simulator could handle mouse events, since I have to make more levels.
ie:
function playdate.mousehandler(button, state, x, y)
-- buttons: 1=left, 2=middle, 3=right
-- states: 1=moving while released, 2=down, 3=moving while down, 4=just released
end
Would be much better if the Simulator had this built in, perhaps as an option, and that it also forwarded mouse events to a connected device if "Control Device with Simulator" was checked.