This entirely depends on how abilities are tuned.
Hypothetically, if you removed tank and DPS stances you'd have to make the enmity combos for all tanks the centerpiece of holding aggro. Which means a PLD would have to focus on using Halone, and only when they have a threat lead would they be able to sneak in Goring Blade or Royal Authority. The design would lead to increasing the enmity bonuses on Savage Blade and Rage of Halone, with Riot Blade, Goring Blade and Royal Authority getting a damage buff to compensate for the loss of Sword Oath.
That is, of course, unless we're also aiming to reduce tank damage with this change rather than reducing the opportunities to use Goring Blade/Royal Authority during a boss fight.
This sort of depends on what we want to do with WAR. I still argue WAR should lose the drains (really, DRK should have those for the sake of theme) and focus on using skills to sort of ignore part of the damage aimed at them.Moving back to the OP's post, if there's any skills I want to see removed/changed for 4.0, It'd be Bloodbath and Foresight being merged into one skill. Fracture should also be buffed to be worth keeping up outside of specific scenarios.
Fracture could be changed into a skill that reduces damage the mob deals to the WAR for its duration in addition to the DoT effect.