You have a LOT of years to pay those management fees if not using them. Once you're sure how many you need (we divided a typical trip by 2 or 3 since only going every 2-3 years, then padded a bit for view and point flux), check out the price to replace with a smaller contract - commissions seem to run 7-10%, and you'd have closing costs both on the sale and replacement contract. If saves enough money, go for the change. Timeshares other than
DVC are usually depreciating assets (DVC is not bullet proof either, none are).
Also, to factor in - are one of the contracts giving you Blue Card benefits? It currently takes 150 points to get that, so you'd want to be sure what you're giving up.
Just my 2 cents worth