I have long thought the WTS is green with envy when it views the Mormons & how they get away with enforced tithing.IMO, it's only a matter of time until the WTS implements some form of mandatory tithing. I suspect it will start with "appointed men" ("if you want to keep your 'privileges', cough up the dough") and then spread from there.
I reckon tithing will come in "within our generation" (pun intended). But i think what will happen first is, there'll be a major schism and it'll be like Jehovah 2.0. Same bullshit, new can.