I want the majority of raid buffs removed
I think "partner" buffs such as Dance partner, Astro cards, Dragon sight are perfectly fine.
Also Bards songs that don't just happen in a burst are fine.

Buff jobs should bring a consistent Buff for the duration (1%-2%? the entire duration) and/or a single target buff.

I don't think having these 120 raid (dur: 15-20) buffs on a single job is the issue It's just how every job plays into being a buff job outside of tanks, some healers and very very few DPS. bringing a "raid dmg buff" should feel interesting, not be the norm