Its a little late, coming after the 10.2.8 update, but the reason 10.2.8 was so buggy was because all the adc members were busy testing 10.3 (myself I never touched 10.2.8). Apple should open minor updates to web members of ADC. They already have downgraders, and I'm sure it would give them many more testers (who aren't busy testing out the major releases).
Maybe someone raised this before... But I think its a good idea. Keeping it still in ADC (or perhaps opening up Apple Seed a bit more) would make it so that Apple doesn't have to directly support the system, and keep it on the beta bug trackers.