I'm also excited about playing the franchise on a portable system - in fact I almost bought a PSP Go just to have portable Monster Hunter. While having a big screen lets you really enjoy the beauty of Monster Hunter, being able to play anywhere/anytime is very appealing to me.
Got 30 minutes at lunch? Just enough time to carve out for a few spare parts, mine resources, or dig for charms. Business trip or flight coming up? Take your grinding on go! Wife watching her favorite testosterone-sapping show this evening? Keep your manliness intact by taking down your very own Deviljho without having to leave the room.
If I have suspend options that allow me to pause single-player hunts to deal with real life matters and then jump back in afterwards, all the better.