Your call effort-wise of course. But surely loc stuff aside, this is so much a duplication of cellnet-info?
Out of curiosity: why "best results would be achieved using, fort example, Google Earth", as opposed to Marble on-device? Shouldn't accuracy be exactly the same (low)?
Wow,that sounds great. I'd just installed this program but it's only 1.9. Could you please push the 2.7 package to the repo?