Kaiten

[Rilifane]

BLM is another outlier though.
Foul gets replaced by Xeno for single target once you reach 80 and is only ever used over Xeno for cleave damage at 2+ targets. It could be merged with Xeno since Foul also gets traited to being an instant so it's a bit in the same boat as SAM's skill. It doesn't use a single skill in aoe and single target, they're completely split once reaching 80 and it's only Foul before that. Even Freeze as a recovery tool on boss fights when you dropped Eno died as it now requires to be in UI in the first place.
Not that BLM lacks real estate on its hotbars but I wouldn't mind if they merged Foul and Xeno. I think the aoe/ single target split is a bit outdated in general and since SE isn't big on designing add fights, even the "But more class depths!" argument falls flat and all it does is take up hotbar space for more interesting skills - or at least they could add some procs/ synergies that occasionally make you use aoe skills in single target.
But as they are right now, they don't really add anything. You have your single target 123 and your aoe 123 with a couple of "use on cooldown" skills.