First impressions, from a run on Greasy Spoon in Sedona, Arizona:
Overall, the 100 series has to be the most comfortable Land Cruiser I've ever owned! I don't think I actually turned the a/c and automatic climate control off for the first week I had it, and actually had a "hot flash" that turned out to be my forgetting to turn the seat heater off!
Off pavement, the width and IFS takes some getting used to, coming off of a well-equipped Troopy and 70 series; but it is kinda fun having to really pick good lines and test driving finesse rather than just hitting the "magic" locker buttons.
The A-trac works well, the only learning curve being that one will use constant throttle and let the a-trac take over, rather than backing off the throttle when a wheel looses traction.
The suspension, while adequate for dirt roads, begins to get a bit soft when navigating tougher obstacles. The rear is fine; however, with the IFS in the front, the nose can dive, reducing clearance under the front diff as well as causing the running boards, which are already dangerously low, to become fodder for the ledge the front just dropped off of! Of course, slowing down can do a lot to negate this effect.
So, my thoughts so far: Uprated springs with about a 2-2.5" lift should do the trick; along with running board (and front brushbar) removal.
-H-