I hope they do silo spells, having to choose between Comprehend Languages and your run-of-the-mill attack spell usually meant no Comprehend Languages unless you outright knew you were going to need it and hadn't already put it on a scroll for just such a situation.
But what I think Mike means here is that if you prepare Comprehend Languages (for a random example, assuming there is a ritual version of the spell) in a spell slot, you can cast the ritual version for free. Presumably, the ritual version would take longer to cast and would not be very likely to be done in combat, but would be useful for the exploration/interaction pillars of game play.
Personally, I'm not sure I like this solution, as it still forces you to choose between Fireball and Phantom Steed, and if I did not spend a slot on the utility spell, what then? Still a gold piece cost? Not an Ideal solution. Maybe I can cast a ritual version by spending some type of fatigue/Hit points? I don't know.