Vanilla has you enlist at Gnisis Fort Darius specifically. This is very deliberate because the early questline there serves as an introduction to the faction, before the player who’s of course not going to be a trooper moves on to getting more Knight-type orders.
> Does the excuse (“all the other legions are at full capacity”) still hold for the whole province? Otherwise what?
Also, the advancement structure specifically leads the player to Castle Ebonheart by the end, where they’ll eventually join the Order of Ebonheart and advance to Knight of the Garland only after a certain quest; also reflected in that they’re given the Duke’s Guard armour in the usual fashion of “advancement gives Legion uniform” (the Duke, his guards and that purple cuirass are all specific to Ebonheart).
> How do potential Legion quests on the Mainland deal with rank and advancement? Different Orders for late quests perhaps?
Note that there’s also an unused “Imperial Knights” faction.
Joinable in Vivec’s secret quarters by talking to Eno Hlaalu only. That should be kept IMO;
There are two groups of quests in the original MT: Eno Hlaalu’s writs, and writs that can be given by and turned in to any Master in any hall.
> Should the original Vvardenfell writs be available to Masters on the mainland?
There’s no particular excuse why they shouldn’t if going only by proximity, since TR has gotten rid of the quarantine. I’d favor leaving the generic vanilla contracts available on the mainland; these are not difficult quests to make and it wouldn’t be much work to add the chance of giving mainland contracts specifically for them too (with or without making them also available to vanilla masters – as these are only based on generic rank-conditioned dialogue, it wouldn’t generate conflicts).
Vvardenfell puts you through the Pilgrimage of the Seven Graces before giving duties. TR does the same with any 3 (of currently five) pilgrimages anywhere before giving duties (duties available only in Ranyon-Ruhn so far). The current pilgrimages are obviously centered around the released regions.
> Will the pilgrimages-duties pattern be kept everywhere else and how? Necrom?
Also, the eventual plan is for the current “Mainland Tribunal Temple” version to be reverted to the original “Tribunal Temple”. For the purpose of the temporary patch I’ll keep to “duties on Vvardenfell only after Vvardenfell pilgrimages; duties on Mainland only after Mainland pilgrimages”, but something else may be figured out for the global plan.