Size increase is a personal issue - if the areas you go are friendly to the extra size, if your city driving is amenable to it, if you need the space, etc etc then it's an easy decision.

That's exactly why I bought an '04. The SWB std cab is easy zipping around this urban area + parking, will be easier to handle on trails, all of that good stuff.

IMHO the weight increase is a huge issue. Toyota's 4WD's have built their reputation on durability - primarily due to light weight and low power coupled with components overbuilt for the power/weight. This new truck (and 4R) are very heavy - well over 4000 lbs - and quite powerful. I don't think that bodes well for very hard use, but should be fine for street and moderate offroad use. I guess time will tell...........