Originally posted by Tob
Map 16 and custom palettes are okay though, right?
Map16 should be fine as long you don't go overboard with it. Custom palettes are probably a waste of your time and effort since aesthetics won't be judged separately. If you pull off something neat with them that would fit the original game's default palettes then I guess you should be ok.
Would unsampled custom Music be fine too?
That's a custom resource, use it at your own risk. ;)
So yeah, the message I want you guys to get is: pure vanilla is your only safe option. It's not impossible to make a pure vanilla level good. Also fixing the original game's hiccups in some of its resources (SMB Piranha Plant for example) is safe as well.