Would a second BLT tower located on the grounds of the South Garden Wing cause an outbreak of Addonitis?
If a second tower is built, it has to have some special appeal, or "hook" if you will, to attract buyers. Why would a
DVC member who owns BLT points want to buy more points just because there is a second tower? And if existing DVCers haven't bought any BLT points by now, why would a second tower motivate them to do so? If anything, a second tower with more rooms might make DVCers think there is a greater chance of booking at the 7-month window, so it could actually lessen the demand for having the BLT as a home resort.
I think it would be more appealing to build a second tower in a place where it could have its own identity and could be marketed as a new resort. Addonitis would be much more contagious if there was a Poly Tower or GF Tower, or my personal fantasy favorite, a Hollywood Studios Tower.