Right now long pressing on the card brings up rudimentary details of adjacent towers. This is a good start. It would be nice if it showed more information about the adjacent towers, and had the address if available for the tower you're currently on with a hot link to google maps.
See also LTE Discovery and SignalCheck Pro (which also shows Carrier Aggregation information)
Would be nice if this was real time updating and worked with CDMA/1RXTT