I'm curious if all of these significant mods would void factory warranty since these mods are not "options" sold by FCA. We're not talking HID lights and new alloy wheels here.
In the U.S. at least, it's a bit of a grey area. Legally, modifying your car generally will not void any warranties UNLESS the manufacturer can demonstrate that the modification led to the failure. Car manufacturers have attempted to void warranties over modifications before, and they've ended up in arbitration or court. Sometimes the manufacturer wins, and sometimes they lose.
If I install a Trailhawk SelecTerrain knob in my Latitude, and two months later the transmission explodes while I'm driving down the freeway in Auto mode, will my transmission warranty be valid? Probably. While the knob change COULD have contributed to it, that would be a very difficult thing for FCA to prove. If I install that knob, push the hill descent button, and immediately blow a hole in my transmission, we're going to have a very different discussion.
If I updated the computer using AlphaODB and the body computer became unresponsive, you can 100% bet that they're not going to do a warranty repair on that part. They can demonstrate that the failure came directly from my tampering with the part, and was not caused by a defect or normal use. If I turn on hill assist in the computer, and two months later the computer fritzed out and died when I tried to remote start it, FCA would have to demonstrate how my modification damaged the computer. The fact that I'd accessed it wouldn't be enough to void the warranty on its own (particularly since I'd activated a feature that FCA directly supports on other models).
It's worth mentioning that in most U.S. states, consumer protection laws generally prohibit manufacturers from voiding the entire warranty outright anyway. The warranty is something that you purchased and have a legal right to use for the entire length of its original term. The manufacturer simply gets to determine whether a specific repair should be excluded under the terms of the warranty you purchased.
If you replace the wheels on your Compass, and your cheap, poorly balanced wheels cause a wheel bearing to fail, FCA can decline to repair it under warranty because your part led to the failure. That decision would only impact the wheel bearings though...everything else would be fully covered.