You can find some of that information:
http://www.kff.org/healthreform/sidebyside.cfm"does it suck that access to the PO will be limited? hell yeah. But is there a good chance that within the next few years it will be so popular that it will get expanded?"
My main issue isn't that it'll be limited. Rather, its that it will be limited AND people will be mandated without that option (if things continue in this direction). That drastically changes the paradigm. This isn't an argument about the "public option" not being good enough, but rather, it not being adequate enough to mitigate the regressive effects of mandates. While I can totally understand people want to just pass anything, and improve it later, thats an easier position to swallow if not EVERYONE is affected by mandates. We know Medicare was expanded, but it wasn't introduced at the cost of fucking everyone else over in the meantime at the mercy of the private market that now has a guaranteed level of demand, despite the price points they set.
A lot of people are tossing insults, labeling, and using the "all or nothing" argument to deride opponents. This is so far from "all" that you gotta realize anyone participating in the debate already understands that. Look, the public option doesn't have to be perfect, and it most certainly doesn't have to cover everyone (anything is better than the status quo). But, when you also pair a negative provision like mandates to the status quo, then you now have to be very picky with what you accept as a compromise to the PO. A lot of people don't want to face that.