Thats exactly why it is so important to make sure that your subsystems i.e. story/gameplay/visuals/worldbuilding/level design etc. compliment each other and always double check on each other for being a cohesive system as a whole. For example allowing you to change your companions to the point of making them the exact opposite of what they are (making SH a Githyanki Selunite Life Domain cleric for example) is good for the gameplay but bad for the story and overall results into an average if not bad system in general. Also allowing anyone to multiclass with no ability requirements is in some aspects good for gameplay but bad for world building, because it contradicts with how world presents different classes as someone with at least a portion of experience in their field of expertise. And so on.
I've watched a ton of videos and read community polls regarding 5e, and from what I can tell, druids and wizards are the only classes that work really well as single class. Multi-classing isn't optional if you are min-maxing.
Do the BG3 changes make it far less punishing for spellcasters? Yep. But let's not pretend like this isn't how 5e is currently built, regardless of WoTC original intent or your personal experience. The way so many classes are front loaded makes dipping the best option for a majority of builds (many caster builds can do it without costing spell slots and only pushing back spell progression a bit).
As far as constructive criticism goes, maybe we can make suggestions on what would work to make you, Tuco, and others feel like they are getting what they paid for.
Would a "Core rules" difficulty setting or toggle be sufficient to assuage your concerns?
