They may tone down some specific doctrines, but there is no way they would ever give up their claim to being "gods mouthpiece" on earth, to paraphrase CT Russell.
Honestly, considering the outrageous sacrifices the WTS expects of its members (including child sacrifice should the need arise), the claim of "gods channel" is the
only card they can play to produce loyalty in the R+F. Even 'hinting' that they dont have exclusive rights to the "truth" and opening the door to other 'pagan' religions having "some"
truth would cause a seismic drop in membership. What real reason would any of them have for staying?