You’re absolutely right, the word “Messiah” does get used in that context: as one who comes bearing salvation. I may have gotten carried away with my very specific “god incarnate” definition: god incarnate is indeed one way to bring salvation to a people!
With the Priest’s “Messiah” move as written, there’s nothing really about the kind of “salvation” that the Priest is bringing to their people. Are they bringing freedom from foreign rule or slavery? Freedom from guilt? What are they saving their followers/people from?
As is, the “Messiah” move seems much more like they’re amassing a following of people who they teach or lead in some way. I’m thinking of modern day TV preachers. They have some teaching they want you to follow (“God wants us all to support green energy” or whatever), and then they charismatically attract people to that teaching. In that sense, at least, Messiah doesn’t quite fit as a name. You could add something about the “salvation” that the Priest brings, or rename the move to fit what the content of the move already provide, I think.
Does any of that make sense? I may also be off here. I really appreciate the time you took thinking about this! I also enjoy thinking about this stuff. :D