I keep playing a lot on MP with my friends in 3 or 4 player parties and still find it the best way to play.
I deeply analyzed some aspects mentioned here in my last sessions.
Truly, when there is conversation among players, it is totally functional to share initiative, providing beautiful combos in some key situations, but even so, there are still mismatches of actions that harm gameplay.
The DOS2 format does not really fit for playing D&D, especially in 5e. I don't see much sense or reality in alternating with the enemy every turn.
On the other hand, XCOM, with initiative separated by team, I understand as quite functional for a TT in several situations. BG3 emulating the initiative order with the relative dexterity bonus roll as it is in TT is wonderful!
That being said, my conclusion is that the way to organize initiative in BG3 is in accordance with what I understand about D&D, but the sharing of initiative could be optional for those who prefer to have more precise strategies.
And damn, thank you all for the engagement, it's always great to discuss at a high level with intellectually delicious people!