Democracies are too unstable, autocracies too likely to produce political hegemons. So republics, constitutional monarchies (Hireshmont refers to D'Hara as a "republican monarchy" in order to convince himself that they aren't violating the Treaty), limited democracies, liberal theocracies.... any of these might work.
That's fine, we came up with a ton of different terms to describe our government as well. I tend to favor "Feudal Republic".
Basically, imo, a "republic" stops being "republic enough" for the 'moot when the member states start to dislike how it works, for whatever reason, whether it be because an autocratic leader is creating an unpredictable state (the more power the ruler has, the greater the realm changes when a new ruler gets in place, as opposed to a realm ruled by the lords and especially the dukes who will maintain a similar set of policies regardless of who the person "in charge" is), or whether because it is a pain to work with and chaotic due to its overly decentralized system (like Madina is, or as overly-democratic realms who vote on everything tend to be).
The way I see it, because of how strong the links created by the treaty are, member states want first and foremost a stable government in the other member states, so that they can predict and understand what the other parties will do. In general, republics offer the most stability. "Rights of the lords" and other such things don't really factor in it as far as the treaty is concerned. It's a rule based on practicality, not ideology.
Lies! You've chosen to work with individual Lords - rather than force the Lords to work through the Government. (Though, really, if you got anything through Langfords opiate-clouded mind you were doing well )
If D'Hara comes to me with a food treaty offer I can present it to the Lords and get it approved. Or they can bring it to the Banker for the same effect.
But to be fair, the last few Doges wouldn't have been able to tie their own shoes, much less get something done on the Grand Council so I can see why the prevailing "Madina is so damn decentralized" idea comes it.
The sovereignty of the lords over the government has been used ad nauseum in order for Madina to continue her war against us and in order to refuse to sign a treaty stating they won't do it again. Obviously, it's something many of us in the 'moot grew a little tired of hearing and annoyed with.