Apropos scripture from last Sunday's Mass:
There is one body and one Spirit, just as you were called to the one hope that belongs to your call, one Lord, one faith, one baptism, one God and Father of us all -- Ephesians 4: 1 - 6
The original (if you don't count Herod) - Lord Lovat, a/k/a Sim Fraser, 'the old fox', the last peer of the realm executed for treason.
He may have to if he's serious about unity with Rome. If the deal with the TAC goes through, they will most likely be "way" for any others who are interested. It wouldn't make sense for the Vatican to treat each branch (or track or whatever term you want to use) of disaffected Anglicans as a separate transaction.
If some kind of personal prelature or uniate type of arrangement is what transpires, it wouldn't make sense to have more than one. If they can't humble themselves to merge with other Anglicans, why would anyone assume they can humble themselves to merge with Rome?