You know... I think it's that slide out keyboard.
Many Mogul/PPC6800 users are former Apache/PPC6700 users and included to that group are those who havent but now have a dedicated keyboard. It makes the multimedia experience of texting, emailing, etc a breeze. I am so use to the keyboard (former 6700 user myself) that I have a hard time giving it up and 64mb more ram isn't enough to sway me...
But like everything, technology dictates form & function and away with the keyboard & wifi because they will go because they will be obsolete.
EV-DO is getting only faster and cheaper EVERYWHERE and so wifi will not be needed. Touchpal and the like have demonstrated that a on-screen keyboard can be utilized with precision & speed.
But for now...it's me and my 6800. I love you 6800.