Information overload much?
Seriously, if you need that much data in front of you while driving anywhere, you've got issues. KISS
Nope, no issues and I don't NEED any of this
Backup camera...essential for driving an H3
OBD diagnostics...certainly a luxury. But on more than one occasion, I've been towing in extremely hot weather (think offroad, Nevada, 120 degrees)...knowing what my transmission is doing long before an idiot light comes on is invaluable. During regular off-road towing, I can easily see engine temperature, engine load, and gas mileage. Why does the gas mileage matter? Well, when you are hours from the nearest gas station, changing your driving style slightly to get an extra couple mpgs makes a difference
Android tablet...Google Maps...use primarily as a 'macro-level' view of where I'm at, plus to find any local on-road POIs (brewpubs mostly
Windows tablet...NatGeo Topo...have loaded all NFS/BLM GIS data, including waterfalls, campgrounds, historical sites, etc. Makes it easy to see there's a waterfall 3 miles due north of where I'm at right now. Also provides tracking + breadcrumbs so I can find out where I went the next summer when I can't remember if I turn right or left at the burned out tree stump. Delorme TOPO...has a good 3D feature that allows me to visualize slopes, angles, and sightlines. Slightly different map structure, so some things show up on Delorme you can't find elsewhere. MS Mappoint is a fantastic on-road POI database, along with fairly accurate maps. Also provide tracking for later reference. Mappoint is my go-to when I'm on-road but without cell service (google is best within cell range).
I also have a Garmin Montata...mostly for Geocaching, but also for any outta the rig explorations. I also keep a voice recorder so I can quickly make a note "Beautiful view from GPS point 47 overlooking a valley looking towards Mt Adams" - without ever having to fiddle around or mess with the computers.
I spend more time looking out the window than I do at the screens...if I only had a single screen I'd certainly be 'tinkering' and switching apps, etc. By having more screens, it's less work and I can spend more time actually paying attention to what's outside the truck. They are only distractions when necessary.
And I also keep a full compliment of bother Gazeteers + I stop at all local FS and BLM headquarters for their maps, including MVUMs (which I also have on the laptop so I don't have to stop and dig through a 1" thick book of maps wondering if this narrow road off the to the left is legal to explore).
I guess my point in all of this (other than I don't feel like working at work today) is that technology can certainly be a crutch, but it can also be a great help if you use it correctly.
Cheers :beer: