Blood Dragons have been trying to overthrow the illegitimate.tm kusari government for what, 500+ years now?
Honestly if a player faction wants to try and give it a new twist, then let them.
They're not changing the NPC faction, nothing is preventing people from sticking with the original faction idea.
There have been factions that sought to take Corsairs and Outcasts in a different way, with varying measures of success. But none of them changed the original faction.
It doesn't seem like an unreasonable development for them to try a new approach after centuries of trying, especially if it's in player rp form.
