I personally want Sony to unveil this...
http://www.everydaygamers.com/crownofthornz/wp-content/uploads/2009/02/pspbig.jpg
If Sony released something like this, I would buy it in a heart beat.
I bought the original PSP on release day way back when. It was cool but big, and needed another analog stick. I sold with in about 18 months and bought a PS3.
I wouldn't mind getting a PSP looking like that.