I got a starting strategy for Battle of Khylo.
1 - To our treb firing middle
2 - Enemy treb, clean it incase of enemy shooting it (if no enemy there try to cap the close to enemy point (mansion/windmill) and roam there until your support is needed. If enemy treb is clear and the enemy close point is capped by us, you can break a gate at the enemy base.. always irritates)
3 - Move to the close to us cap point (mansion/windmill) and support clocktower afterwards. If clocktower is lost, wait at your point and group up with the 2 that died/disengaged at clocktower. Start the next push to clocktower from our point as a group of 3 and if possible with the support of our trebuchet.
4 + 5 - Rush clocktower and hope for some support of our trebuchet. If you die or have to disengage, regroup with 3. at his location (mansion/windmill) and start another push towards clocktower. 2 can help out there if necessary.
1+2 - Classes with good 1v1 capability (Thief? Warrior? Guardian? Engineer?)
3 - Squishy class like Ele with not so much survivability
4 + 5 - Classes with alot survivability + grp utilitys (Necro, Guardian, Mesmer, Def Warrior?
During the rest of the fight, main thing is communication: Status reports are important for sPvP (Where are you, how many enemys are at you fighting, is it empty, do you need help, do you need trebuchet assist, where are you going, who is going to help out etc.