Well, since there is no LLSP for Tiana and if you don't win the Tiana lottery, or your return time is 6 hours away when you "win" the Tiana lottery, folks may consider purchasing LLPP.
I have "won" the VQ lottery for Guardians but the return time was more than 6 hours away and it goes without saying, I never used it.
But you are right no standby for Tiana in WDW is not about money, its about the attraction's reliability.
WDW's Tiana couldn't possibly support the normal standby the precious attraction did for decades.