I am happy with the availible companions. Quality beats quantity for me.
The only thing I consider a bit underwhelming are too few interactions between your party members. I wish that they would comment more, bicker a bit among themselves, form bonds with each other. I would not mind more companion quests too, some of them are pretty short.
I will not spoiler the old BG2 for anybody here, but I can tell you, there were some instances of massive drama within party there and they were awesome.
So basically we got neither quality or quantity...