Sorry. Not sure where you're going with that. How is that so much different from the originals? In the first two, it was you and Imoen. So there was still more than just you. In this game, it is you and five others. It's still relatively the same premise.
It means that while the plot has similarities, the storytelling is completely different.
BG1&2 are about you. The other bhaalspawn being your sister is also about you. You have a supporting cast of companions.
BG3 is about Larian's NPC's first and foremost and about you second. They are not a supporting cast. It's an oversized ensemble cast where every one of them is legendary and awesome already at level 1. And when everyone is, no one is. And if you like to envision your own level 1 PC as an actual rookie, it hardly makes sense with your companions being so legendary already.
Dragon Age games are also about the player and the companions are always the supporting cast. The storytelling has more impact that way. That's why BG3 is leaving me cold so far. I hope they can somehow improve their storytelling and poke some emotional response out of the player. But it's much more difficult when the focus is on NPC's instead of you.
