What I don't liked that much about the BG3 reveal is the group initiative thing (not a deal breaker but I would have prefered individual initiative/turn order).
Unfortunately, group initiative is default in 5e.
Of course, that's to make table-top playing simpler... but that's not really a factor in a video game so they *could* very easily allow individual initiative as an option.
Even better, I'd love it if they had individual init re-rolls every round to hearken back to earlier D&D editions. Rolling init every round creates a more accurate representation of the chaotic ebb and flow of real combat. People just don't politely take turns in combat!
