To answer one of my own questions--I got #3 working; guess it was some poor plist file editing on my part, but after having a better understanding of which plist files are for what and incorporating some of the code into the proper plist files, I think I got it down correctly. Not only do I have the Pedestrian option showing up correctly in the Settings menu (it originally had just the Automotive option), I also got GPS Simulator, GPS Log Record/Playback, Reset MyLocations Database, Reset Trips Database, Optimize Route For (car/motorcycle, Pedestrian, Ask Before Routing), Public Transportation (Transit Types) options enabled in the Settings menu as well.
Unfortunately I've now seem to have busted select destination address via Contacts--the "busy" wheel just spins and spins when I select the address associated with the person in my Contacts list...The weird thing was that select destination via Contacts was working perfectly in the Garmin 2.0 version I downloaded but now it just clocks (and eventually crashes the Garmin app) when I installed the Garmin 2.2 version (also downloaded) over the 2.0 version.
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