I dont agree with OP.

-> New delirium looks pretty amazing, i don't really care if WAR/PLD/GNB has the same kind of skill, it doesn't make it worse.
-> New AoE combo sounds good, i like combos, i dont like RDM's AoE Style where you just spam one skill for ever.

Every tank will feel unique from a gameplay perspective, so i dont need that "Identity" from a paper perspective. At the end, gameplay rules.