also the ability to internalize bitmaps would be cool, possibly by the several, or maybe just an option to just internalize all of them. entity is missing that. it's really annoying when you ftp a map to your xbox, run down a flight of stairs, start up halo, go into a game, and then realize you forgot to internalize your super cool plasma pistol skin... and entity can't do it...

and i don't know if it is possible, but it would be amazing if i could delete tags...
anyhoo, that's my two cents. keep up the good work, this looks like it could be really cool.