I agree with this. The team should decide what is in and what isn't, but having a coordinator to make sure that the team is moving forward together instead of in 100 different directions isn't a bad idea.True, but it also can end up fragmented. There has to be somebody to actually direct the designing, so if one person comes up with an idea, someone can coordinate it into the larger scheme of things.
IMO we don´t need someone to be a designer. We can (I hope) put these ideas together as a team. It won´t be hard, and it won´t be time cosuming. It´s much easier when many people are designing instead of one.
Sorry, but I strongly disagree on this. Though it might always work, we'll see... (I hope it does work, because I'd love a nice SW mod, but I fear it won't work out as well, hence my hinting to choose a designer).