Uh, I generally use Ravenloft as something closer to Silent Hill or Alan Wake, where the PC's own actions/fear/guilt/secrets animate the shadow of Ravenloft. In short, the Ravenloft each PC experiences feels very...personal and familiar.
Few options:
only use the sidekick classes.
use only the basic rules with the 4 main classes (no overlap of features)
remove archetypes.
remove ASI altogether. Use more magic items and consumables to compensate.
mix the above solutions.
I've played with all of those and it makes low-power...
So...no diagetic FKS for you today?
I'll have you know that I charmed my ways into the arms of many ladies with my explanation of story-first emergent storytelling in a neo-trad setting!
This. And not good theater.
Crawford's a rules-rules-rules kind of guy (and not the best communicator), he does not discriminate who are affected by said rules. If he could add rules on how to flip the pages of the book, he'd probably do it!
But, having my cleric go against tenets in a crisis of faith or whatever isn't a barb toward your efforts;
It's a role-playing choice!
It does not mean that, as a player, I find the tenets you wrote for that faith bad or anything.
Realisation:
It's is possible that some DMs see a cleric going against tenets be somewhat disrespectful of their world building? Like if it was the player somehow commenting/disapproving on this particular cosmology element?
That's only a problem in a cosmology where gods actively gives their powers each days to their clerics.
There are plenty of other cosmological setup where gods cannot remove the spells like they would turn off the tap and it's seems 5e24 is using one of those as a default, which you are more...
It's a commoner with a few proficiencies and more HP, let's not pretend it's a great opportunity to advance your character goals unless it was "dying while adventuring".