One of my absolute favorite things about Death Knight in World of Warcraft is their ability to battle-rez. They're one of the only non-healing classes that can do it and it's a wonderful little addition for their class fantasy, given that most (if not all) Death Knights are also necromancers. I'd love to see more of this type of thing in FFXIV, and I've said since ARR that Paladins would make an ideal off-healer (or off-off-healer in 8 man content). The current DPS-focused meta of the game doesn't really allow for such, I don't think, but it's something that could be worked towards.