To be an online tabletop GM is to be preemptively apologizing for not making complicated maps while also being extremely glad you're running a system that doesn't need complicated maps
Discovering new and exciting ways to break roll20 that I never have before; the 100-token map didn't, the dynamic lighting hell didn't; the transcribing a whole AP map spread over a 50 page book didn't; but making about 200 boxes because you can't actually make straight horizontal lines otherwise to represent about 75 grid zones, that was the straw that broke the camel's back and makes the select tool just give up
Terrible program, except for all the others