Not going to go into too much detail but just some party utilities would be nice. Just a few ideas would be to just take some ideas from classic final fantasies and give us some vivi skills.

Temper
Saber
Haste
Aura
Conserve

Those are just a few traditional blm skills that could be used to give the class utility and make it desired.

For increased damage without just upping potency wouldn't mind seeing a poison dot. Allow foul to put a venom dot on enemies.

Like everyone else in here let's hope come February blm isn't shunned in party finder groups. Really sad when you can't even help in clear parties.