Hello everyone! It's been a while since I first took up SMW hacking, and was lingering around this site for about a year until I finally made an account today. It's surprising that a hacking community for a game more than 20 years old is so active and cheerful! Excited to join the conversation!
I think I have a bug report: If a flip-x or flip-y a tile (or a rectangle of tiles), then change that rectangle's dimensions by dragging the edges, the rectangle automatically gets unflipped. Quite a bothersome bug.
Currently Lunar Magic does not have support for custom tile surface outlines (to my knowledge, anyway). You could make a request for such a feature in this thread; I imagine it wouldn't be *too* hard of a feature to add into the existing dsc file format if deemed worthwhile.
No, he probably meant to change the hitboxes ingame.
This is the block that I meant but Noobish Noobsicle's version looks better anyway (judging by the screenshots, haven't really tested it).
Edit: I have to mention that Noobish Noobsicle's version kills the background, so you may have to reconsider your choices.