Generally when I buy a vehicle I buy the trim level that has every option. In this case, power running board. The Grand Cherokee didn't need it, plus I had the air suspension and could lower it for parking, making it easier for my 5 YO and 8 YO to get in and out. I don't even use the static running boards on my F150, and my kids just end up sliding off of them. They seem much more sure footed on the power boards of the Expedition. In all, I'm glad I have them (for now). I just wanted to see if I could help keep them from failing and costing $2K to fix myself.
As for the comments about adaptive cruise, etc just being a maintenance nightmare...we had it on our 2008 Infiniti M45x and never had an issue, I had it on my 2011 Grand Cherokee Summit and never had a problem, and my wife has it on her '15 Lincoln MKS AWD and hasn't had an issue. Hopefully this vehicle follows that trend. Though the Lincoln does seem a little finicky about snow/ice blockages. Might be because the sensor is behind the bumper cover and on the Infiniti and Jeep they were exposed somewhat.
I have a feeling you'll be just fine. New tech is finicky when it's new, that's the way things work. But most of the stuff on these vehicles is not new, just new to this model.
Ford/Lincoln has been doing power deployable running boards for a while now. Adaptive cruise hasn't been a new tech since the late '90s. Auto start-stop has been around for almost 30 years. Lane departure warning systems were introduced by the Japanese in the early 2000s. No one is complaining about anti-lock brakes, power steering, or automatic transmissions...and those were all "new tech" at one point.
It is easy to be bearish on "new tech" as something that will always break, but things get better over time. Remember how often your Windows computer would crash in the '90s and 00's?...but I bet you can't remember the last time you got the "blue screen of death."
The vast majority of the systems on these Expis can safely be called "proven" by now, even if it is new to the Expi model specifically.
Eventually, folks may just have to admit car manufacturers know what they're doing and aren't actively trying to sell us turds that are going to self-destruct just because they have a computer chip in them.
Progress is not bad, folks.