Unfortunately you guys make me wanna cry. It seems to me I'm punish for you don't get any friends to play with you.
I can tell you how a multiplayer mode should be played, it's called coop.
Of course there will allways only be one "first" hero, but why shouldn't it be possible to have a buddy following you just like one of the NPCs. If cutscenes and conversations where made a bit better than in Neverwinter Nights 1/2, there is really no disadvantage.
If "the game system was inspired by classic and contemporary tabletop fantasy role-playing games". then they should, no they must give some heavy thoughts in multiplayer. We never rolled our dices alone. And now the time where PC players sit alone in their chamber is gone as well.