It would solve the issue of walking for months, but it would give an advantage to people with a lot of points. They would be able to start booking a few days (or even weeks) in advance. It's a mitigation, not a solution and I'm against any system that would give an unfair advantage to only some people; at least now, as long as one has enough points to book two nights, he's level with anyone else.
Mind you, I'm often in banking mode, this means I could easily start booking my dates a couple of weeks in advance if I wanted to, so I'd be one of those who would get the unfair advantage and I'm still against it.
Also, the real issue for me is that I don't really trust
DVC to mess with reservations. They actually gain money if points are lost (via breakage). So I bet any rule they'd introduce would make our life more difficult and cause a loss of points. I own another point system, there is no concept of banking and borrowing, points are available in the account to be spent for 5 years, points are deducted only at check-in, if I cancel (within the free cancellation period) they go back to their status. This makes my life much easier. There is no real reason to have banking and borrowing, except to hope that all those rules cause people to lose points. I don't want any more rule to complicate an already convoluted syst