If you guys want to be another game which does PVE and PVP content, great and all that but seriously, it's not well done right now. The PVE content is very different from PVP and I have yet to see a game which creates any semblance of balance when trying to co-mingle these play styles.
Suggestion - Separate them completely.
Abilities, gear, harvest items, in short everything should be separate. Add another tag where the ability or gear is PVE or PVP. Unless you are in a PVP zone, you cant equip any PVP armor and abilities are unusable. How many changes one way or the other is a result of something working fine in one environment but not the other and the first inclination is whip out the nerf bat. No one likes to see their toons nerfed. No one I have ever met anyway. This is a serious undertaking but may be worth it in the long run.
Another byproduct of this change would be disabling CP all together in PVP. Enable CP only for PVE and increase the caps and let the PVE'ers march forward.
It seems most of the PVP players really want more of a challenge and level playing field, this should get you there. PVE players tend to have a bit differently mentality when it comes to play. PVP is more console type of FPS - its me against you. I have met very, very few real pvp'ers that care anything about quests, decorating, content completion etc. Its more about my gear is BIS and racking up the kills on the leader board.
As to events - why force your players into a completely different play style to participate in the event? There should be a PVE and PVP method to achieve the event rewards for the duration of any/all events.
My 2 cents worth. Cheers.