And I did read, I was just trying to get the wheels turning since a few people seemed interested in this being a lil more real time.
Honestly, even if this could be done, I'd probably recommend against implementing it.
As the utility exist, it's more of something that provides an information snapshot to you, information that is obtainable by simply exploring the areas you're looking at on the snapshot. If it were more realtime, that could actually be used in situations (*ahem* pvp...) to get a distinct advantage over other players, something it can't be practically used for today.
If that were to happen, what is current a neat little unsanctioned utility could make the radar of the devs as a means of cheating. If that happens, they would almost certainly react to shut this down, either through obscuring the information developmentally or, worst-case scenario, through legal means.