Perhaps maybe from religious philosophers, but as official church doctrine? I doubt it, perhaps the establishment will turn a blind eye to local syncretism, sort of how Indian christianity is on the far side of acceptability in terms of practice but gets off the hook simply because the local traditions serve to proselytize more effectively.
I was thinking that in a divergent Muhammadan Christianity, this drive to find more prophets would start damn near immediately. After all, it occurred to me about two days after seriously thinking about the idea. So within a decade we could see various people arguing about whether Nestorius or Zoroaster was or wasn't a prophet, and whether they should listen to anything they say or dismiss it all as just heathen beliefs.
In other words, the idea would probably come up before there's time for an official church to set itself up. Especially if Muhammad is more of a preacher than a political figure, in which case he's not really trying to set up his own church.
Even if nothing lasting results (almost certainly what happens) and within thirty years everyone laughs at the idea of Zoroaster being a prophet actually sent by God, the idea could still be there, and end up having a large effect on the faith as a whole. Though I can't think of what that effect would be other than being a bit more tolerant of other religions.
Indian Christianity is just about the only situation where I could see there being a big diversion from that basic model of considering and then dismissing locals as prophets. Because India is relatively far away and dominated by completely different religious traditions, the missionaries would probably have no choice but to create a mixed Christianity.
BTDubs, if what I'm saying is not very consistent, it's because I'm really really excited about any and all possibilities here. I'm posting ideas I have more or less as soon as I post them.