He could sell food unique to the crimson, like rambutan and blood oranges too, etc. (once it's 1.4) but that's just a side thing.
Also, yes, I sprited the moustache, for this character, because his face (lol) is much larger than normal town NPCs' so he needed bigger moustache too. he could sell his outfit as vanity, but it might be difficult to do that? I dunno. plus, are we talking about his large moustache on a human-like face, or the whole head as a vanity mask?
also, I dunno that mod you mention, but I think it's unnecessary to re-invent any parts of 1.4. let's just wait for it to arrive to modded. even if it might takes a while...