Please increase the buff cap to at least 40

[MetaBoi]

And this applies to many different actions in the game. It’s not just that the buff limit is small, but that the game design is horribly inefficient with buffs.

And then there is Thrill of Battle on Warrior which reads:
"Maximum HP is increased.
Enhanced Thrill of Battle Effect: HP Recovery via healing actions is increased."

It says this even before learning Enhanced Thrill of Battle trait in level 78. So, you think they would make Kerachole like this as well right? Since Sage is designed in Endwalker with this trait in mind. It's baffling how inconsistent they're with buffs.

Edit: Another idea came to mind for abilities that have multiple buffs with different timers they can switch the buffs midway. Such as with Physis II. Example on how it could be written:
Physis II
Gradually restores own HP and the HP of the nearby party members as well as increasing HP recovered by healing actions by 10%
Cure Potency: 130
Duration: 10s
Grants Autophysis when the effect expires
Cure Potency: 130
Duration: 5s

This might mess up HoT ticks but I don't think it will cause that much issue for majority of playerbase.