For the most part, becoming a sorcerer is impossible. You either already are one, generally by birth, or you never get to be.
Meaning it should not be possible to multiclass into sorcerer.
The exceptions where a person could become a sorcerer later in life are rare, and subclass restricted.
The only justifiable sorcerer multiclass I've noticed in this game would be the Aberrant Mind subclass, what with the tadpole.
Conversely, Draconic Bloodline should never be available to multiclass into.
Also, how in the world did you end up making a game literally focused on the characters being infected with tadpoles, and not include the Aberrant Mind subclass?
Even if that subclass only released for D&D a day before the game's release date, you should have delayed to include it...
Multiclass into warlock should only be doable if you character actually meets and makes a pact with a patron entity in game, limiting subclass according to said patron.
And then the story would acknowledge the pact even if you respecced out of warlock, like I assume it does for Wyll.
Honestly, it is downright laughable that we can freely both respec and multclass into Warlock and Sorcerer, but can't start already being an Oathbreaker.
Don't get me wrong, I love that there's an actual mechanic in game for breaking your oath, that's a downright amazing inclusion.
But implying that your Tav already broke their oath before the game starting is much more reasonable than bypassing the implications sorcerer and warlock are supposed to have.
Saving the biggest for last on purpose here:
Cleric subclass should be restricted by god. Or god by subclass, depending the order in which they are selected in the character creator.
The idea of people worshipping one god, but getting the power of a subclass that's basically the opposite, which that god either shouldn't be able to grant or would simply refrain from doing, feels about as ridiculous as being a 20 Str 8 Dex barbarian that exclusively uses bows.
