Seriously, I might as well be partying with a level 30 as with so many people's level 90s now. Hard to believe people take pride in having useless jobs end-game; personally I wouldn't even put up my seek flag for anything other than a skill-up party.
This comment feels extra funny as an old Summoner who played level 37 WHM for years. I'd suggest we implement the Summoning skill system.

Below skill cap = damage penalty
At skill cap = nothing
Over skill cap = damage bonus

Mostly because I think the system sucks, and it would be funny seeing how F rated weapon users have as good accuracy and damage as A rated users. Better we all have wonky mechanics than only Summoner.