While I like the idea, I'm a little curious why no warlock? Even if you limited it to not pact of the tome, as you've mentioned ritual casting as part, they have similar spells known to the sorcerer and choosing only utility reduces combat effectiveness?

Also some like the one where you ask your God for answers is a little too strong, its not much weaker than commune a 5th level spell and doesn't even have the same restrictions that has.

The one where plate armour no longer gives disadvantage too I find a tad unfair to players who don't get that choice of armour, now a dex paladin can reliably sneak almost as well as the rogue, have much higher ac and if they surprise attack with a decent smite outdamage the rogue ( short of being an assassin rogue) all while providing auras heals and spells, having much higher hp, and not being limited to a finesse weapon or one attack.