I'm gonna go ahead and nail my colours to the mast here and admit that I'm a relatively recent fan of City and an American. Started watching out for City results when Reyna and Beasley were part of the squad and got hooked from there (circa 2006).
That said, I'm currently sitting in my City track top with the round badge and rose (the Umbro one...yes I prefer Umbro as well!). I chose this one because I MUCH prefer the round badge design both from an aesthetic standpoint and a historical one. I've only really ever known MCFC with the eagle crest, but I'll be happy if we lose it in favour of a round badge.
I guess my point is that it's not fair to lump all us johnny-come-lateys into a know-nothing box. Some of us actually have some sense about us. I have no doubt the club will do the right thing here and even if there are small details that not everyone will agree on, I believe the re-designed badge will satisfy both old and new blues. I think it's great that the club is consulting the supporters on this. Another smart move by the management...
edit: Also, as someone who works in television, the round badge will be SO MUCH easier to work with...just a thought..