Quartz
Hero
I'm theorycrafting here...
Players can achieve impressive numbers by stacking effects, breaking Bounded Accuracy, so how about orthogonalising them by keying off Proficiency
So, under Guidance, Inspiration, or whatever, if you are not Proficient, you roll as if you were Proficient; if you are Proficient, you roll as if you were Expert; and if you're an Expert, well, you already know what you're doing.
This means that no matter the source, PCs get no more than a +12 bonus to their roll from these effects.
Note that this improves Guidance and Inspiration at higher levels, keeping them useful when the action economy is important.
Yes, this does mean that Expertise can be applied - on a one-off basis - to attack rolls.
Players can achieve impressive numbers by stacking effects, breaking Bounded Accuracy, so how about orthogonalising them by keying off Proficiency
So, under Guidance, Inspiration, or whatever, if you are not Proficient, you roll as if you were Proficient; if you are Proficient, you roll as if you were Expert; and if you're an Expert, well, you already know what you're doing.
This means that no matter the source, PCs get no more than a +12 bonus to their roll from these effects.
Note that this improves Guidance and Inspiration at higher levels, keeping them useful when the action economy is important.
Yes, this does mean that Expertise can be applied - on a one-off basis - to attack rolls.