Back on topic...I now have about 1,500 miles on my '17 AG SCREW:
1) I've not had any issues from it skipping 2 and 4 in "Normal" mode. It does it, but I don't notice any lack of smoothness in the shifting between gears.
2) On a few rare occasions I may have noticed the same vibration you are mentioning. My initial thought was that it was merely the transmission hunting a bit for the right gear, but it never seemed to be constant or annoying in any way.
3) I experimented with the Modes and with the 4x4 selector switch. When going into "Weather-Mode" there is a noticeable decrease in response as the computer seems to limit driver input. However, leaving everything in "Normal-mode" and simply rotating the selector from 2-H to 4-A, I did not notice any change at all in response, noise or vibration. In addition, if you look in the information screen, you'll see that with either of the choices above it will show "power" being distributed to front and back on one of the screens, but if you look at the next screen (where it shows the graphic of power from the wheels to the ground) in 4-A you'll see only the rear wheels are engaged (unless you need front power at that moment).
Overall, I am absolutely loving my Raptor, but a few minor issues/complaints so far:
1) Rear backup camera is not as "bright" as the one I had on my 2012 Platty.
2) Not a fan of Apple CarPlay (not sure why, just don't like it), and still don't know why these auto companies can't figure out how to use USB thumb drives formatted to 32GBs. I'd like to be able to load up a single thumb drive with music, put it in the little console and forget about it, but I can't figure out what the magic mix is for FAT, size, power, etc. to get a thumb drive to work in this thing
3) Hey Ford, it's 2017, learn to put the AM/FM antenna in the windshield and stop with the 31" whips!
4) I'm 6'4" and wish there was just a few inches more in the left-most footwell for me to stretch out my left leg (nit-pick, I know)
5) MyKey is just pain dumb. If anyone really uses this, please let me know how and why.
6) Auto Stop/Start - I've already ranted about this in other posts