Who would make a good Clan Representative/Head for each of the groups?
It sounds like what it is on tin. Aside from the Toreador who have a succession crisis I'm cooking up, I think that having each of the clans choose a representative or "clan head" would make things more politically interesting and easier to navigate.
It also helps with the cold war style of politics I like vampires to have.
The Clan Head would be the organizer for clanwide events, give instructions to princes for intercity cooperation, be the First Speaker at meetings, and have access to all unowned clan treasures and clan information.
Additionally, each of them will hold the quick decision for the "nuclear code" - access to a highly effective deterrent. This is the cold war gimmick.
Some clans like the Brujah will just treat it as a figurehead sort of thing, but due to certain events every clan agrees to do that. Gehenna was prevented 6 months prior to the establishment of Clan Head, and quick selection is key.
The nuclear codes are complicated and irrelevvant to the basic concept, and are as follows:>! The Brujah, Toreador, Tremere, and Nosferatu all have the torpid bodies of their Antediluvians on standby - awakening them is like an h-bomb. The Lasombra can summon 10% of their founder to basically deploy [this thing](https://w.wallhaven.cc/full/x8/wallhaven-x892mv.png) and the Tzimisce have a grey goo style bioweapon made by the Eldest after it reached Azhi Dahaka. The Ventrue have contracts with the human who knocked 4 of them into torpor to begin with, and the Gangrel have a gen 4 Legendary Garou abomination created by Ennoia as a weapon to kill the others (it's got 9 in the 3 physical stats and protean alongside all the good gifts). Malkavians can untangle a corrupted Stillborn King from Malkav's network to spread the madness to 10% of the global population. The Giovanni and Banu Haqim can just ask their founder to do something, because both of them are fine. The Settites have a.... something.... in the Duat that nobody wants to see loose - most likely Set empowered by Oblivion. !< Mutually assured destruction is in play.
So, what canon characters would want to fill the spots and would actually be voted in? Would Methusalehs want to be in such a public office for any of the clans? Or would it be elders and ancillae clamoring to join the roles? I feel like the Methusalehs would want to be the ones with their hands on the button, but on the other hand there's zero chance Helena will come out of hiding because she has Menele gunning for her.