My excuse? Why should I make excuses? Do you just want a change in appearance for changes sake? So you can show off to your friends you have the new model and people can't confuse it for an older model?
I'd rather have a refined similar looking model rather than a drastic new one that causes all sorts of problems.
Are Apple fans scared of change or something? Why would a different model cause problems? I hardly think stretching it slightly qualifies as refinement, worse, it looks ridiculous. Can't put it better than the article....
"To use a car analogy, six years ago the iPhone was like a sexy new flagship model from BMW or Porsche. Today it's a Toyota Camry. Safe, reliable, boring. The car your mom drives. The car that's so popular that its maker doesn't dare mess with the formula"