One thing I'm slightly curious about is if a faction gets a unit overhaul after completing a reform, will other factions be able to recruit the reformed units if they conquer homeland regions of reformed factions?

I know its possible to update merc pools in medieval based on the year, but is it possible to update based upon a triggered reform?

The first question will likely end up being rhetorical and I don't, by any means, expect an answer before it's available, but rather, I hope it is something that is considered.