I'd love to see an addon similar, but a bit different to the archaeology hud that was released awhile back. Basically I'd like to see waypoints for each survey, colour coded by the distance with a matching line drawn between them.
Survey 1 is red (far) so it gets a red dot on the map.
Survey 2 is also red so it gets a red dot and a red line is drawn from point one to point two.
Survey 2 is yellow so it gets a yellow dot and a red line from point two.
Survey 3 is green so it gets a green dot and a yellow line from point three.
Survey 4 is green so it gets a green got and a green line from point four.
Survey five is the discovery, it could have a white dot (or maybe a little shovel icon) and a green line from point five.
Once you do another survey it clears the last batch of points and starts over.
I'd love to see it drawn on the map and/or minimap but I think scale would make it hard to see, so a HUD would be great.
I know this is similar to another addon, but the other one used coloured arcs to represent the possible "dig zone" and it was quite messy once you had a bunch onscreen overlapping. I think this idea would be easier to visualize.