Better ways to apply to multiple enemies, sure.
But what about difficult to stick to individual targets?
You might land Guilt on a hero or a Light-resistant target with Humble + King's Mien. but you probably won't and that one shot is all that combo gets you. Also: Getting those reliable enough to stick with one shot on multiple targets will require a decent investment in Cunning, whereas you could use the single target versions with a bit less Cunning (sure they may miss now and then, but it isn't all or nothing either.) This is especially true of Fool's Mien, which is only 50/50 at 1/level Cunning.
For the first few floors, I would argue Light has the stronger start: Humble hits like a truck, and the very likely application of Guilt means your team will probably win against almost any other team. Agony is about 20% weaker, and Fool's Mien is both less reliable on hitting and less helpful very early on when you don't have lots of multi-target abilities to take advantage of all the Pariah with.
Longer term, yeah, you could argue Dark has the better deal since it has a harder to get ability... but 80%+ of games end during that period of advantage Light has, so the advantage there is of some note too.