Fair, I'll give you that, I have no problem with the MC evolving twice, since having 5th Evo MC would be so cool.
Going back to the stuff about his other game ideas, WW has said that he won't do two things at the same time, since he is already stretched far enough with Superhuman. He'll finish Superhuman no matter what and then jump to another thing, that's why he said that Superhuman will be cut in two parts, because he feels that the point he'll end the first one is like a satisfactory ending until he feels like actually going back to the story and making the second part.
To be honest, I don't care if he leaves Superhuman for years, don't get me wrong, it'll hurt, since I came to love the story so much, but I'm so excited about his other ideas, especially for the Necromancer game.