They just revamped pretty much all the items. There are still a number of pieces with native evasion bonus and defense would obviously be the main reason for wearing armour in the first place.

If they dumped incredibly stat-heavy gear (and I honestly don't think they've held back much at this stage) upon us, then they would have to top that whenever they release new pieces of armour, which would give us a rather silly endgame very quickly with ridiculous numbers.