Fun fact 1 : You cannot have a mage hand and a familiar at the same time
Yes, and that's a problem which should be fixed. Along with mage hand working exactly the opposite of the rules as written in every way. It does not mean that it is the final version of Mage Hand, because this is not the final version of the game.
Fun fact 2 : Larian already did everything that they could to destroy casters in BG3. HP bloat, spell nerfs, ultra limited max level...
That's not a fact, that's you making an baseless assumption of malicious intent, and calling it a fact.
Fun fact 3 : Larian never had a game with good necromancy
That's not a fact, that's you taking your opinion about what good necromancy is and asserting it as a fact.
Larian has a LOT of resources. If they din't allowed us to see the tier 3+ spells is cuz they are debating if they will """balance""" or not(read : Balance = Ruin and force everyone who wanna a more P&P experience to use a mod like spell fixes for nwn2)
This is more baseless assumptions of malicious intent.