Personal Limit Breaks vote for it

[Lemuria]

No. As Yoshi previously stated, it'll just be like every character has one really long cool down ability, which defeats the purpose of the limit break in the first place.

Not necessarily, they could be smart about it.

DPS gains Limit by dealing damage
Tank gains Limit by taking damage.
Healer gains Limit by healing damage (overcures are ignored for this purpose).

It has potential to add an interesting dynamic to the game if it's used properly, but I would like to see them become a bit more special than just "Random DPS deals extra damage". Here's a few ideas off the top of my head for how it could be used more dynamically.

White Mage: Greatly improve magic defense for the party for a short duration.
Scholar: Consumes all Aetherflow stacks to grant a stoneskin effect to the party. More stacks = stronger effect.
Paladin: Reflects a portion of damage received back to the attacker.
Warrior: All physical attacks on you have a 30% chance to restore HP instead of dealing damage.
Black Mage: Reduces the enemies magical resistance.
Summoner: Marks an area. Avatars within this zone gain 20% extra damage and resistance. Enemies in the area take damage aspected to the avatar element.
Monk: Gain positional benefits to skills automatically. Additionally, all positional benefits are doubled. (eg. Twin Snakes deals 180 potency instead of 140 since it's a +40 increase)

...I could probably go on, but you get the idea. I just think there's potential which is being overlooked. They don't need to be overpowering, but they can be included as a nice enhancement to what we already have.

Edit: It doesn't need to be called a 'limit break', but I do think the concept is pretty cool.