Writing a novel, and I started off with a main character, and lots of side characters. I am switching up the POV between 3-4 of them. As I've been developing them, one of them has realllllly came to life, and I have been putting a lot of emphasis on him. Is there a problem if say halfway through the book, it seems like it could be more about a different character then the first half seemed to be about? Or perhaps this could be a good practice? I have thought back to books I have read, and I can't pinpoint any specific novel that this happens to. In the end of this one, both the MC and this other one will likely have about the same importance to the novel.