He would, but he didn't. I'm not saying I'm against it as well. But it's quite obvious that DMC4 could easily be excluded in the series without giving any impact. Actually, the series would recover if DMC4 was excluded, less questions and everything could've been alot easier to explain and understand.
Also, durr, Nero steals the actual main character's spotlight. It doesn't matter if you like the main character or not but obviously many do, protests that Nero will get another game is huge because it'll be most likely be a DMC game and so many just want Dante back.