I don't think the Kawi looks that bad. When I saw it at the bike show in DC, I saw it from all angles and I liked the looks of it. I think the back would look a lot better if they would have put the brake light between the turn signals instead of that useless piece of black plastic that's currently there. About the same shape and size.
I don't think the pipe looks ugly, just different. Bike makers are pushing the boundaries on pipe shapes and sizes. I didn't like the short stubby look of some of the sportbike exhaust systems when they first came out, but, it has grown on me. Nowadays, it almost seems odd to see a new sportbike with a long round can.