1. Create a points system for every enemy killed. Give us something to go out and kill for!
2. Make/create WvW weapons/armor rewards exclusive and can only be obtained via points gained from WvW enemy kill count. These armors/weapons have to be very much worth it and has WvW only stats on them e.g increased hp/def/atk while in WvW map.
3. All above has to be done considering that one player cannot accumulate ALL needed points in 1 night!