The nerf won't come out until 3.25 at least (ergo next step or after)

And BTW vanu vanu are the worst to farm for these XD
Old ARR Tribal quest are better to get token

...

But they already said that (in 3.2 I guess)
They will remove the retainer coin and leave only the Tribal item
(The other will be exchanged with the Tribal vendor)