Radio is indeed complex but it works great imo. Much better than the H-K in my previous bikes. Very clean, clear, crisp sound. The display is great - including the built in gps. Really the display is better than the Zumos. Just a shame it isn't sophisticated enough to do the job I want.
As for mapping software I'm still a big fan of the old Garmin program MapSource. I've also used Garmin's BaseCamp and it is OK. I just don't like the database aspect where everything is all there together. I'm old school in that I like the hierarchical structure of folders, files, etc. I tried H-D's Ride Planner a few times but thought it was a bit slow and cumbersome but that may be because I've not yet mastered it.
Agreed on the radio. Sound is crisp, clearer, and less distortion at volume than my other 2 CVOS with the H/K radio. Display is good, more readable & like the High Contrast option for very bright sun. After using it a few times is easy enough but is a bit cumbersome to switch music sources.
I was using Mapsource until last year, not a fan of BaseCamp. Lately am using either Streets & Trips (out of date but very user friendly) or sharing GPX files with fellow travelers via the H/D Ride Planner. Ride Planner has it's quirks but most of the time the shared files work ok. Will see if that holds true for the Infotainment GPS. According to the manual, it does, but not making any bets on that.
With some hardware/software apps out there that are intuitive and very user friendly, it seems H/D took an odd non user friendly route for the Info screen as to GPS. Agreed, a true shame it does not meet your needs.
When I was at the HD museum for the 105th I participated in a survey regarding hand controls for the Touring family. One set I tried was very much like the controls on these bikes and in my opinion these controls are a big improvement after getting used to the multi functions.