Give it 20 years.
When I was a lad, in the 70s, we always went to the Sunshine Coast, mainly because it wasn't the Gold Coast. The Hinze development blitz was already underway, and it was rapidly becoming over developed, and expensive. We had friends who went there, and occasionally visited them down there, but for the most part we went North instead.
By the time I left Queensland, Noosa was starting to go the same way. I still don't think it's as bad as the Gold Coast, but it's slowly been shifting that way. So, I'm wary of any beach township in SEQ, as they all seem to be heading in the same direction.