Speaking for myself as a 15m pilot, I really do not want the definition of 15m ruined with handicapping. And the idea posed here about having a handicap adjust to the weather is extra extra icky. 15m numbers have not been fantastic but it's still the strongest class and the numbers are good enough for sure. It doesn't need to be messed with please.

Yes, collocate with Standard is fine. That creates a good situation for Standard guys that they can know for sure that they will have a contest to fly. If they get 10, they have a Standard Nationals; if not, they can fly in 15m. No handicap.