I've been thinking about how in the past, teammates who spend time building and repairing bases don't tend to get a lot of points on the scoreboards.
I had the idea in my head that perhaps the game could record both kill-counts and stationary HP built/repaired? HP points deconstructed would also need to be counted against the players as well, to keep them from spamming useless junk, but I think this would be an effective way to keep track of defensive efforts supporting the attackers.
It would certainly help with my own play style that involves building and maintaining the most indestructible, ingenious, and unsurvivable bases possible to support my team rather than getting killed by attacking.