If one side really wins a ccs it should feel more Special
First one side must conquer the secondary capital Citys ( dwarfs,elves ) ( I am dreaming here

If and when ccs are implemented again it should not be someting that happens 1-2 times a day ( on my old Server ) but something that really has an Impact and can only happen once a month ?
Perhaps a BIG Special statue on the market-place/Apex for the side that won the ccs last, then can be retaken when it won by the other side ?
Something than has an Impact in the lore across the whole game ?
just some thoughts
Cheers