Yoshida himself have said that for him Samurai is more a Damage Dealer... for the armor? a chain armor like the dragoon.
like i have said before, no point to have 2 jobs doing the same role with almost the same weapon....
we have still all the blunt weapon and a percing weapon that aren't used by the tank. a blunt weapon will create a bit of synergy with the monk.... finally, a tank based on the parry is nice... but outside this? i means what will be the main particularity of the samurai? skillchain (like a lot have ask, me inclued)? that more dps than tank.... and a reactive tank based only on parry will be bad, because spell can't be parry.
soo far the particularity of the three tank:
- paladin, high resistance & a lot of CD
- warrior, high hp pool & high generation of threat.
we don't know yet for the dark knight but probably something around the magic. the samurai as tank will bring nothing new, the parry itself is not a particularity important enough, especially since the warrior and the dark knight rely on it too.
i have a great news for you, until now, the one that decide what will be what is still Yoshi-P. other point interesting at noted, if the samurai come out as dps, he will probably share the same armor than the dragoon. finally, the actual armor of the dragoon are made only for the dragoon... then use them as comparaison of if is adapted for a jobs not even ready to be released.
people really need to stop to add tank that will bring nothing new to the game, indeed Dark Knight did fit more into the story of heavenward, but i feel the real trouble was to make the samurai really unique as tank. and like said this game lack a damage dealer with 2 hand sword when it's a classic into the franchise, then don't hope to much for a samurai tank.
your wish =/= what Yoshi-p see for the game. or we will have get a hunt different, a persona housing different and many stuff very different of what we have get soo far.