I always laugh when people who have 80's tell me how big 100's are. For that matter, my 100 goes almost everywhere my Tacoma did. It helps that I don't care about pinstripping

There is only 1 local trail I avoid due to how narrow it is. The Tacoma barely fit, and not without rubbing the sliders.
The cool thing about the new crawl mode is the potential for controlled hill descents. From the videos I've seen, it works great on extremely loose downhill slopes. Due to the lack of compression braking in the 100 series, I sometimes miss the manual transmission in the Tacoma, whereas the crawl mode would be a nice option for those downhills.
I like these options like this because they are selectable. I suspect the next generation FJ, Tacoma, and 4runner will all employ this technology.