If TAR was doing as good as it was before, and especially if we had 2 seasons a year, then I would say I wouldn't mind an All-Stars of any kind.
Now, please just do a regular season. Nothing else. No gimmicks.
BTW, I really think the All-Winners All-Stars should be saved for TAR's final season or some special celebration anyway. And as oval pointed out, TAR is interesting in the way that anyone can win. In Survivor, if you're not prominent in your gameplay, i.e. if you're boring, you're not gonna win (most of the time, at least). And some of TAR winners are teams that weren't really entertaining to watch. So even if I liked them as winners, I wouldn't necessarily add them to my All-Stars wishlist, and so such a season might seem stale.
Who would be your dream cast for All-Winners, anyway, guys? This question goes for those supporting the idea, mostly. Also bear in mind, that with All-Stars, at least a couple teams will always decline.