I feel that use of "it's ugly" should be banned as an argument in Swift Evolution. It's purely subjective and boils down to "we shouldn't do it because I don't like it". Also, sometimes ugly is good. If you have a feature that people should only use sparingly but might get abused, ugly is a good cue.
I think that that raw strings will be a useful but not often used feature so the aesthetics are not that important. I'd be OK with almost any of the proposals here because I don't anticipate using it very often.