4.5 inch screen? Really come one too big. I want a phone, if I wanted a tablet Id buy a tablet. As far as Im concerned 4.3 is the upper limit for me and thats even pushing it. Replacing an already big phone with an even bigger one is not a replacement. The only way it would be ok is if they could basically make the whole front screen and have the bigger screen without making the phone any bigger.
From what I've been hearing, most phones that pass the 4.3 mark are due to more utilization of the face of the phone and not a bigger overall device. Especially with the ICS phones because they can eliminate the capacitive buttons and pull the screen down even farther.