Useless rolls

[Anza]

People saying Dancer's Roll is skippable are crazy. Great downtime roll, great solo or lowman roll (skillup parties? even affects NPCs!). III or XI Dancer's Roll is MASSIVELY efficient healing.

Blitzer's is excellent for single-handers, including a COR/NIN or /DNC dual-wielding daggers/swords. Great for COR/DNC solo, great for Abyssea alliance exp parties with 1h/H2H DDs. As a COR PUP MNK NIN, I'd ideally want Blitzer's/Rogue's on me on any of those jobs in a normal Abyssea exp alliance.

Magus Roll is sometimes very useful in fights against strong nuking NMs. Temenos mega-boss comes to mind, I've used it on several mission fights. And it's super-cheap, no excuse not to have it even though it's situational.

Allies Roll has one powerful situational use - Meikyo Shisui. If you're ever in a fight where SAM 2hrs are a key part, you might kick yourself for not having this one. Not the first priority, as it does cost a bit and use would be rare, but it could come in handy.

Drachen is also situationally powerful for SMN Astral Flow, and is great for unusual PUP nuking situations.

Choral is highly unlikely to be used often, but it's cheap enough that you should get it anyway. Same goes for PUP and BST rolls, which do come in handy occasionally if you're in a party using pets (SMN, BST lowman NM fighting, PUP). Not commonly used, but they're so cheap you might as well have the option.

Scholar's is pretty weak, and is completely surpassed once you get Caster's - at that point you'll have two better mage rolls for any situation.

Gallant's is safe to skip for sure. Probably Courser's too, which I've never used - it's POSSIBLE that you'll run into a ranged damage fight with RNGs and CORs spamming /ra (say, Odin in Einherjar final chamber), but even then you would still be fine pairing Chaos with Hunter's or Tactician's.