I'm not that familiar with the resale market, but it seems to me that the cost of resales has risen in the past ten years.
If DVC raises the cost per point when it opens BCV sales, then that should bolster the point value of the resale market. I have heard guesses in the $80 - $85 per point range for BCV....VWL is finishing off at $75 per point right now.
DVC membership can only be obtained from Disney or through resales. It would make sense that if Disney can raise their prices and sustain sales, so can the resale market. Of course, there is always the potential for stress resales resulting in a good resale value at any time in the future.
IMHO, waiting could conceivably result in a higher cost per point. At some point, the 2042 expiration will affect the resale value, but I don't think that will happen for at least 10 years.