It seems kind of.... stupid. Unrealistic?
The only way I see a ruler rebellion making ANY sense is for more liberal forms of government becoming more centralized; a republic turning into a monarchy.
Even then, with the governments being so customized, who's to say the monarch isn't less strict than the republic? Should it only be ruler rebels to institute a tyranny?
Lastly,
Definition of REBELLION
1
: opposition to one in authority or dominance
2
a : open, armed, and usually unsuccessful defiance of or resistance to an established government
b : an instance of such defiance or resistance
The ruler IS the authority. Virtually anything they want to customize about the government can be done, except for a few usually seemingly unnoticeable mechanics attributed to certain governments. It would be easier to just give the ruler a toggle for such features. Instead of changing from being a monarchy to a republic, just let the ruler click "Allow judge to impeach," or whatever feature you're looking to switch. With the level of customization that we have now it doesn't really make much sense to differentiate the mechanics of more or less obsolete government systems anyways.
