I should probably expriment with the clickteam exporter and see if i can get a good full-screen for an update yea. I wonder if a custom cursor is possible too
if it doesn't have a specific function for setting the mouse cursor, you could just hide the cursor (I'd assume that's possible in clickteam?) and have a sprite set to its position. That's what I did for my game to make it more dynamic than a regular cursor.