Based on the fact this is "Baldur's Gate 3" there is a degree of responsibility to capture the DnD ruleset. Removing Classes, overhauling the spell system, and entirely redoing the action economy are simply not options. Not just becauseof pissing off fans, but because it is likely outside of whatever contract exists between Larian and Wizards.

That being said, there are plentily of changes that can make 5E function better as a cRPG video game that don't undermine the spirit of the source material. I hate to see people rejecting a good step in the right direction because it isn't exactly how the tabletop system functions.

At the end of the day, we are not responsible for designing the game. Making huge sweeping overhaul suggestion don't normally help developers. Instead, I would strongly suggest focusing on the experience you like/dislike instead of the suggestions to fix it.

A lot of the feedback in this thread seems to come down to "Some classes have boring combat between level 1-4." A considerable number of people seem to agree on this point. Coming together and voicing this singular concern to Larian will be far more useful then each offering 50 unique suggestions to fix it.