We just recently closed on a 50 point BWV contract with 6 names on the deed to allow our extended family and one close friend to take advantage of the
DVC membership perks, including the PAP discount.
One thing to be aware of: it takes about 6-8 weeks to close a resale DVC contract, so the current PAP deal that expires on 12/31/12 will be expired before you become a new DVC member through resale. You can buy direct, but any savings you are expecting for the PAP deal will quickly be eaten up by the higher buy-in rate. There maybe another AP discount available in the new year, but you never know if it will be worth it or not.
The earlier posters who stated that your contract will be part of your mother's estate when she dies is correct, but you can elect "right of survivorship" on the deed and avoid probate. There is no significance to your mother entering into a nursing home as was previously stated... unless she becomes incapaciated and someone is appointed as her guardian. Then the guardian would have the authority to manage the DVC membership for her benefit. I see this as a small risk assuming you are her closest relative.
** I'm a probate attorney and may be able to provide you with general info if you have specific questions, though I'm not providing you legal advice and I'm not your lawyer [typical lawyer cya language!]
We bought our loaded 50 point contract just to get us in the door with access to the discounts. We weren't planning on buying a large amount of points until we tried DVC out, but ended up offering on a 220 point BLT contract a few weeks later when we found a good deal. We aren't putting everyone's names on this contract because it is a much larger amount of capital invested. Therefore, we'll have different membership numbers and a different UY to deal with. This may be a hassle, but will protect our dvc asset from being in jeopardy if any of the people we put on the small BWV deed falls into bankruptcy or has other liability issues (such as an at-fault car accident).
... just a few things to think about when adding other family members to your deed.