The only reason they were pre-selling units at SSR is because they had no other product to sell. SSR didn't originally go on sale until August '03, just as their inventory of BCV points was virtually exhausted.
While I appreciate the reasoning behind your arguments, realize that they had to significantly discount SSR points as part of the pre-sale (giving away Developer's Points, discounting purchase prices, no dues payments, interest free financing, etc.)
There may even be legal reasons they couldn't pre-sell this far in advance, but I'm not certain.
That said, I still don't see DVC coming to the CR. These cast member rumors are a dime a dozen. If we believed what the CMs passed off as "fact", there would be a 5th theme park open now and monorail track all around Disney property.