Yup, was thinking about if they removed the medal hogger ladder then that'd be jut 1 less ladder.
They removed defends/attacks/largest empire ladders so 3 already.
I like the idea you picked up there EE, that you can then tell how active CV's are on the islands and how much they are capping, maybe you can show also how many SS they have gotten from the captured lands, like 10 SS on tranquillity, it automatically adds it on, and while that wouldn't be a separate ladder itself it'd be a nice little statistic to look up.
I think it would also help promote pvp somewhat for those super-active PvE cv's but never seem to pvp.