It runs the risk of making the evil path default for the game, because that's what will get all the iterative improvement attention. Even the good aligned companions won't show until after EA, and so won't benefit from that iterative improvement.
I am pretty sure other companions might be added as EA progresses.
I have no doubt that there will be plenty people who will still play goody two shoes. Sven encouraged people to try an evil path as most don’t play that way. Even if some people will listen to him, most probably won’t.