@Musashisei - i concur with those suggesting you leverage Interval.
You seem to have a firm understanding that you got a lemon. The original investment is gone - but it has offered you access into Interval and you can make lemonade. At a minimum, I would join and investigate your options - especially with getaways which are cash only.
If you enjoy SVV you can get Interval getaways there cheap with the exception of peak weeks starting around $500 using a getaway discount which are done reasonably often. I would not use my points to stay there. The cheap getaways are very common in Orlando as it is overbuilt, and you may find that true in some other areas. We love SVV - one of the best pools and grounds of all the Orlando resorts.
The next step is to maximize the points you do have. You may want to find a place within your system you want to go.
Once you get a feel for using Interval, a few years down the road you may consider buying a resale unit somewhere else that is also in Interval and dumping what you have - but i think it makes sense to see what you can do with what you have. It is all about finding a way to maximize the points you have within your system. You may find some Vistana stays that not only work but you get good value from. I have belonged to multiple points systems and found some great deals if i would travel offpeak and stay in smaller units (but it still had to be good weather).
Good luck!