I was thinking about this very subject yesterday, though not so much regarding revulsion but a kind of 'bleeding' that can occur in languages that are too natural looking. On the Interlingua Wikipedia there's a person that clearly thinks he can get away with an Interlingua-ish Spanish, but really it's just a weird kind of Spanish. Maybe the artificial -o, -a, etc. really is the best system for keeping the language distinct from the unconscious influence that people bring into a language when they use it. I've noticed that any 'revulsion' I feel towards a language only applies when the content is small. With a few example sentences and nothing else it can look a bit weird, but if I see a thesis or an entire book written in the language, it seems to command a respect that goes beyond any initial revulsion. Much in the same way that a robot that looks 80% like a human would lose its revulsion if it were impressive enough that it could look at me and say "Look, I know what you're thinking and I'm aware that I look weird to you, but this is the best we can manage with today's technology. I hope you don't mind." That would pretty much drive it all away.