My opinion :
Every buff should take buff slot EXCEPT :
1) battle/spell forces
2) lvl 80 bubble that give buffs, example : archer bubble, duelist bubble , warlord bubble . In few words bubbles that are giving stats
3) Pagrio heart
4) Pagrio fist ( maybe )
5) Celestial ( buff and augment )
6) hot springs debuffs ( malaria etc )
7) FOI from Domi
