[tab][/tab]Hello Quite Possibly a Cat , and welcome.
[tab][/tab] Very nice. There is a whole covenant in Greece that specializes in Longevity rituals, she could work in tandem with them. They are probably the best in all Tribunals. Original research is... difficult. Very timely, costly and punishing in rolls...plus the player will not know the target number nor if its possible at all. As long as you are fine with that and want to play this style, I am ok. However, you need to make sure the character is not confined in a laboratory all the time. I will need him to actually play. See character creation guideline for the Bonisagus example.
[tab][/tab]<.< Becoming, yes. See character creation guidelines. Ie. I would prefer not to, but if you really want this, I will work with you. Note, you start with Fae Magic, no other Mystery Virtue. Also there is a Covenant in the Aegean that does just that, could have synergy...
[tab][/tab] Ah yes, 'Highlander' attempt. See I think you misunderstand Death Prophesy, it is not 3rd edition Immortality+7. It's not 'Can only die when decapitated', its 'You will die when you lose your head':
-[tab][/tab]If you are decapitated, you lose your head
-[tab][/tab]If male and you lose your 'other head', you will die of bleeding
-[tab][/tab]If you get drunk and/or really mad and start a fight, someone stabs you and you die. People will say ' he died because he lost his head'
-[tab][/tab]Your very old grandpa, the head of your family, dies in a raid. You die with him trying to protect him.
Having said that, I am intrigued with an ex Miscellanea tradition, possibly dealing with divination or the dead, that has the apprentices go through a Gauntlet and they see their deaths (in a metaphor or in symbols). It makes them quite the tragic figures. Multiple apprentices is not a problem for the Order, in this case its mild alarm that these 'mavericks' will do crazy things (I think you were hinting that they were creating a deathless army or some such?). For a deathless cult, read up on the Gruagachan in Lion of the North and Brude Deathless. You will have to rethink this concept a bit more to make it work.
[tab][/tab]Interesting, needs more work. Be careful not to make him a bookworm closed in a library. You need to be able to actually play the character. Maybe he is a researcher in folklore, an avid collector of rare books, a student of the Magic realm who cannot actually perceive it, or a pursuer of truth (journalist) who wants to reveal the secrets of Magi to the world....
No grog creation at this time. They will be generic, until played. Then they get named, and after a while, if the players like them and become a fixture, they get stats and advancement. I have... bad experiences with grogs. I will allow magi one or two personal grogs, but I prefer them as background characters. (I know, its contrary to how most people play)
[tab][/tab] Yes, we are. And from the get-go, three people are out of luck (I think I mentioned that in the recruitment post at the 6-8 person?). There is a reason for that, you will become aware of it when we do the Charter.
As for the Books part, let me think about it...