+1

This suggestion has been made by others before (including myself) and it is probably the one addition I'd like to see on the scoreboard (in addition to # deaths and # revives). It is also an easy thing to implement.

Captures and points earned is a different statistic. Example scoreboard of a 900 pt game:

Player A - 12 Caps - 220
Player B - 4 Caps - 690

Player B's caps are "more valuable" than Player A's--mostly because player B probably fought off all of the enemies who attempted to take his caps (Striker / Guardian) or successfully deterred/stalled them from stealing his caps (Guardian / Bomber). Player A is capping, but is unable to maintain any caps that generate points for his team. (Which is not necessarily a bad thing either. Excessive capping is a good way to draw attention away from your 'main' caps that you want to generate points. You get to see Player A's "role" in the game.)

It's not the perfect representation, but it helps--the scoreboard helps paint a picture of what people were doing during the game.

This system would actually encourage you to cap in groups than to capture solo (which is kind of a good thing since then players cap faster and spend less overall time capping) since you can "piggy back" your points score off other players--ie. if Player A and B cap the same point, then A runs around capping other crap while B holds down and defends the cap, Player A is getting a better score for Player B's work.

Deaths / Revives # would be nice too for the damage-centered players, as it would be useful to compare kill:death ratios.

No one will care about any of the other stats you add as long as damage or K/D is visible.