It's a quality of life change that is being asked for. I don't see what the problem is. If someone is taking a beating I'm pretty sure that they're going to worry more about living than a limit break coming from a dragoon. Just saying.

Personally, if some of the dragoon mains are worried about not being able to offensively use their limit break I don't mind making sure to keep myself alive to make myself useful for when you do limit break. If you're worried about people mitigating the damage from your limit break I don't mind immediately diving in after your limit break and dropping a 46k bomb all the way around to try and protect you. I don't mind. I heavily rely on dragoons. I kinda get it though. Range is not crazy to dive in when it comes to frontlines. As for cc it's solo q. Who syncs things? Still, it's a QOL change. If you were facing another dragoon on the team aren't you worried about your teammates guarding instead of doing damage when you limit break?

I'm not a dragoon main. However, I'm pretty certain that there's a 1 second cast delay before they can end the limit break early despite both abilities being instant.