Assuming there will be more companions in the final game to have a four companions party seems not so great. The advantage of D&D and Pathfinder rule set in video games is (imo) to have a lot more classes then in other games (like Dragon Age etc). So it would be nice to have a six-companion-party.
I also don't like the fact that we don't have to possibility to group our companions. Very often the selected leader of the party runs into some foes, the battel starts and the other companions are far behind. At least they should stick togeather like glue.
