What Roles would you like for Samurai and Red Mage?

[Shippuu]

I agree there, even though they made Dark Knight a tank even though it fits into the DPS role quite nicely. Tanks don't have to be heavily armoured though, and vice versa. DPS can wear heavier armour, similar to the Dragoon. I would have preferred they made the Ninja an evasion tank, but oh well... too late for that now. It's entirely possible that they'd create two jobs under the Samurai name. Now that classes are no longer a thing with new jobs, they could be entirely separate unlike Scholar and Summoner, they could share levels too, if they want tI think it would be a cool idea to mess around with, and if successful they could branch it onto other jobs, like having an Ninja tank, DPS Warrior, etc. Doubt they'd do that, and I do think the Samurai is going to end up a DPS in the end. Makes me wonder what they'd choose for tank though if that were to happen. Viking maybe?

You're right, tanks don't have to be heavily armored, but they will be. It's a design choice and a development and itemization one. Tanks will wear fending armor because if they don't, then they're either sharing a set with a DPS now, and that's bad to have a tank contest loot with DPS, or they have their own tier of armor and all that does is pollute the already polluted loot pools as well as requiring a lot more dev time to put in another tier of armor.

They've made it clear they aren't going to do branching systems anymore, and there's little point in including 2 different versions of samurai when there's plenty of other colorful FF jobs to include in the game. It's just not gonna happen.

And your last point is pretty much exactly why SAM should be a tank, because without that, there's no iconic AND requested job that fits the tanking archetype. People argue Samurai tank would be too much like DRK. But how is a Viking somehow different than warrior? Dual wield axes? Samurai could dual wield katana or tachi+wakizashi. How is a Rune Knight much different from a DRK either? Rune Knight is even more similar than a Samurai would be to DRK. There's simply nothing else that isn't some obscure FF job that could be a tank after Samurai and so SE would be a bit foolish to waste such a choice on another DPS.

This is of course if they're even interested in adding any other tanks after the current ones in the next expansion. We could easily simply just see 2 dps added and then queue times will get even worse than what they are now.