My latest server has left me once again questioning the balancer of power between Kings/Dukes/Governors. I've played all three, so I have a reasonable perspective I think.
As long as he is active, you are stuck with your King. Sure, if he was really bad everyone could gang up and boot him out, but I've only ever seen this happen early on for Kings who didn't know how to play. Leaving and joining another Kingdom is only even thinkable early on also if your King knows how to play the game. But knowing how to play the game doesn't mean that they are good, or compatible, Kings.
Generally Kings appear to trust no-one apart from any pre-existing clique (and I understand why, but this doesn't make it any easier to take), so most of the Kingdom are kept in the dark and have no part in decisions that affect them considerably. Given that, in a decent Kingdom, Kings get more resource and don't have to waste troops acquiring it, I feel that they owe the Governors something, and let's face it, it's not protection like it says at the start of the game - the Governors protect the Kings/Dukes, not the other way round.
At the moment I don't feel I have the time to play King and I'd rather not be a poor King. Others don't feel the same reluctance; maybe that's because the advantages of being King are so large. Therefore I suggest that there needs to be an advantage for Governors that's not available to Kings (or probably Dukes). I'm not sure what that might be, as I'm sure Travian wouldn't want anything that might cut gold use. For now then, I just want to make the suggestion that there needs to be something to make being a Governor more attractive.