should the situation arise I think this is a very viable use of a swiftcast CD, a lot of time's if the tank is in critical dmg range and/or about to take major dmg then the party is probably not in need of a raise/or a couple of party members are already down and a raise would probably be useless just for one person (unless said person could also raise).

im using HM titan as my "minds example" but should you be in phase 5 and down a healer with not much left to burn down as titan is almost dead I can see this really helping a tank sustain a bit longer while you tend to critical party members to get the grp through the fight!

put simply, great use of swiftcast depending on the situation! I think many would agree!