Earlier quoted context omitted.
Bezels have the opposite effect to what you are purporting. The most difficult to reach places on the iPhone 6 are the bezels. A 6 inch phone is not one-handable imo. That is coming from someone with larger than average hands.
I don't think anyone is going to make a 5 inch smartphone. Even if they make one they won't be able to sell any.
The ZenTouch button on this looks great - main complaint with my Mini is not being able access Notification Center easily one handed. Unfortunately it looks to be right hand operable only…