I'd really like some non-origin companions, would make the game feel as huge and expansive with all kinds of interesting characters excited for adventure like the old BG games. Good suggestions from the characters who are available, too.
The origin companions are generally pretty neutral on a good/evil axis, like they have their preferences about specific actions but are ultimately kinda along for the ride with whatever. This is fine since y'all have a shared motivation and it makes sense in character. That said, it would be nice to have some characters like in the old games that you can really only party with if you're playing a certain kind of character -- be it goody two shoes or murder hobo. Also I loved the old game's situations where it's genuinely hard to keep party members from killing each other. That's also tough to have with the current cast.
I both liked and disliked the system where companions could quarrel with eachother, but I think it could work here where the game is more set up to allow the player to diffuse or pass judgement on situations in camp. And a varied cast allows the player to truly have a party unique to them.