Yeah, it's best to let sleeping dogs lay as this point. I don't see how any good would come from the band at this point.
There's always the age old question of "Get new music that sucks and destroys the bands legacy or just let them keep riding off the coat-tails of their classics and never get new music"
At this point, I'd rather just have them touring on their classic songs than taint their career with some medicore rubbish.
Very rarely does a 10+ year wait for music pay off. I personally think it paid off with Rammstein, but some people would argue with me. *shrugs*
Definitely did not pay off with TOOL, I am with ya 200% on that one.