What if Tank classes could only meatshield?

[JMadFour]

Just take bonus Emnity Generation off of the Skills, and put it on the Tank Stance.

make Tank Stances add the Emnity Generation bonus to all skills. ALL skills, not just an "emnity combo". example:

Grit
Reduces damage received by 20%, while lowering damage dealt by 20%. Also increases chance to hit by 5%, and adds Increased Emnity to all attacks.
Effect ends upon reuse.

Syphon Strike
Delivers an attack with a potency of 100.
Combo Action: Hard Slash, Combo Potency: 250
Combo Bonus: Restores MP
Grit Effect: Increased Emnity

End Result: Tank Stance is required to hold aggro. boom, every tank uses tank stance to tank in. additional DPS-focused effects can be added to what used to be the "Emnity Combo" (such as say, Increased Attack Speed, or Increased Mitigation for example).

You can still stance-dance, but there is more risk to it, since you don't have a combo that you can spam to keep your aggro up outside of Tank Stance. You would ACTUALLY have to Stance-Dance, rather than just ignoring Tank Stance completely.