Mercule
Adventurer
They ain't free rituals.No love for free rituals?
Hey, everybody, free rituals!
Why no love for the free rituals?
It's the potential to learn those rituals and use them in the same way a character with Ritual Caster would. For an NPC who doesn't have to study for years to get the basics of rituals down, that's a really great benefits, but we've already established NPCs aren't taking the feat. If a PC is after the rituals, they may as well take Ritual Caster, instead, and get all the rituals open.
If the Marks actually awarded the rituals and/or reduced/eliminated the component cost, that would be fantastic. Otherwise, the possibility of accessing a handful of rituals isn't that great.