As someone who tends to use pretty elaborate post formatting in games, I wholeheartedly support this venture! I would bake you guys encouragement cookies, but y'all just have to get virtual hugs instead. To be perfectly honest, I'll just end up doing the bulk of things manually still I'm sure (I'm dumb like that) but it would be a godsend when it comes to the mid-post stuff like speech colour.
To help people in the meantime, I may recommend using Firefox as your Myth-Weaver browser. I use Google Chrome generally, but I always do my MW on Firefox because you can do some things like bold (ctrl+b), italicize (ctrl+i), and underline (ctrl+u) font with key commands.