You and I have both have been saying something to that effect for a while. The LDS are going to have to mainstream to survive. At some point a great “prophet” will come forth and set everything straight, explain away the BOM perhaps as some test of the faithful or something. It will come to pass somehow. Probably end up in some mix of old school Protestantism.
Hey if that happens will you and I be “prophets”....
I suspect it may be something close to what the RLDS have progressively gone through. However, I think it will be hard for them to give up the money factory temples - and the associated stuff. What I can’t answer is just how embedded the old ‘orthodoxy’ is.