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I believe that WvW may benefit from an increase in the number of PvE activities on each map and this would improve the quality of the PVP.
Although it seems counter intuitive, more PVE equals more oppurtinuty for small group action in off the beaten path areas of WvW even One on ones that dont immeditaely turn into zerg fests.
THe only Caveat being that the PVE needs to be totally optional so that people who are not into pvp wont be feeling that they have to take the risk of being "ganked" while completing some required daily PvE activity.