Could you be a little more specific at what it will take to be "proven stable"? Timeframe? Criteria? i.e Are we talking about 30 days? 90 days? Are you waiting for it to be proven stable, or testing it yourself to ensure stability?
If you guys wanted to offer it in limited release, there are probably a few of us who would take you up on the offer...I have a couple of projects that I need to host on 3.5.
Keith