Bruce,
I think you’ll love the Emerald K3. In addition to the new features you mentioned, you can also move the load and speed sites to increase the granularity at low load, low rpm situations. This makes a big difference for dialing in drivability at city speeds that require minimal throttle openings.
Although I haven’t enabled the switchable map option yet on my K3, an interesting thing you can do is create an antitheft mode. Set up one of the maps so the car will start and idle, but will die if someone touches the accelerator. You can also just zero out everything so the car won't even start, but with the other approach, they won't begin looking for a hidden ignition kill switch. Instead, they'll just assume it really is an old Lotus and curse the Lucas electrics
-John