I personally like it when numbers are smaller in order to create a more intimate and personal story by keeping it confined. Also I won't even need them to fulfill all roles since Larian talked about adding the ability to fully customize the companions, similarly to how the Mirror worked in DOS2. So all it really comes down to me is their personalities and stories, as their roles I'll be able to customize myself, which is why I'm okay with keeping the group small.
I loved all of the 6 characters in DOS2, even though Beast's story felt a bit weak compared to the rest. And I pretty much enjoy all of the BG3 characters so far as all of them are intriguing to me. Even Star Wars KOTOR games felt perfect in size and they had about 10 companions.
As for Origin feature, I enjoy it quite a lot as it gives a perspective and story that the player normally does not get. And an Origin character ends up being widely different as a main character than a companion. Fane in DOS2 for example is miles ahead in terms of story if taken as a main character, compared to just being a companion. Same as Sebille and Red Prince.
