The 1440x900 display resolution was the only drawback when I got my MacBook Pro back in 2006. I previously had a HP nx7000 with a 1680x1050 display (15"). That notebook was from 2003 and even back then, Dell already offered optional 1920x1200 panels on some of their high-end notebooks. High resolution notebook displays aren't as new as some people here might think. 
I prefer the 15" form factor but for my next MBP, I won't buy anything below 1920x1080. If Apple doesn't bump the resolution on their notebooks that means moving to 17" for me.
What makes sense for most people would probably be:
13": 1440x900
15": 1680x1050
17": 1920x1200
High resolution notebook displays are much better to read than many people think, since you usually sit very close to a notebook (compared to a desktop monitor).
My dream would be a 16" 1920x1200 MBP - but that won't happen.
I prefer the 15" form factor but for my next MBP, I won't buy anything below 1920x1080. If Apple doesn't bump the resolution on their notebooks that means moving to 17" for me.
What makes sense for most people would probably be:
13": 1440x900
15": 1680x1050
17": 1920x1200
High resolution notebook displays are much better to read than many people think, since you usually sit very close to a notebook (compared to a desktop monitor).
My dream would be a 16" 1920x1200 MBP - but that won't happen.