A Monarchy done right?

[Figging Mint]

I wouldnt go so far as to call it stable, but What Im going for is a political situation where the various factions are all still committed to the current structure, rather than constantly all gathering up their armies for overt War whenever they disagree.  That way they all will be equally freaked out when the MC shows up with powers that completely shake the foundations of the Status Quo.

If the magicotechnological-industrial base is growing as rapidly as I've understood from your earlier posts, of course it will not be stable.   Are you going to try for a from-the-center-outwards pattern (with the frontier being sort-of-last-to-get cultural shifts)?     Or are you going to posit independence leading to nucleation of ideas so that new memes can arise anywhere?

[Quantus]

Im going with Fate knocking over the whole Sandcastle before they get the chance.  Specifically, the MC will upset the status quo by having power that breaks all the rules.  Its different enough, with scary far-reaching implications, so those in power are going to try to make it/him go away, for various reasons (fear/ambition/zealotry).  But more than likely Ancient Evil (not seen since the Founding of the current system) will come crashing back into the world, which will force priorities to a much more basic and darwinian vector, so that whatever works and saves the day is .  Of course not everyone will be as willing or able to adapt as others, but that will be the fun part.