IMHO, in the majority of cases they should be under 20 points a night, but as to if they actually get to that price it will be interesting to see.
Sooner or later someone at Disney will realise that there is an excellent arbitrage opportunity by charging
DVC members 20 points or so a night for non DVC hotels and renting out DVC rooms to the general public.
Personally I'd love the chance to sit at Disney, rent out non DVC rooms to owner for points and then use those points to rent out DVC rooms for cash to the general public. Pay me 10% of whatever I could turn them for I'd be more than happy.