I like this! It opens up a lot more design space for rituals. There are a bunch of spells that feel like they shouldn't cost combat/adventuring resources, but also shouldn't be usable every 10 minutes. This would make it possible to add other limiting factors. I particularly like the option of ritual-only material components.I was working on a thing where I was giving each spell a section at the bottom called "As a Ritual."
A little specialised, given that the main class capable of casting them doesn't have ritual casting, and has better things to spend its feats on.Find Steed
Find Greater Steed
At that point you may as well just make it a class feature.Mage Armor
No one has better things to spend feats on, though. Linguist is great! Keen Mind is the bees knees! Feats don’t matter.A little specialised, given that the main class capable of casting them doesn't have ritual casting, and has better things to spend its feats on.
For who? Every class that can get it? Easier to just keep it a spell. Everyone but wizard has to have it Known or Prepared to use it, and Wizards aren’t spending a slot on an AC fix unless they get hit by an anti magic effect.At that point you may as well just make it a class feature.