Played Secure last night and I noticed another 2 common mistakes:

1. Attack main Outpost in group
2. Do not know how to use Main Outpost’s defensive mechanism

Currently, Main Outpost is most secure location if you know how to use its defensive mechanism properly. You will be able to 1 vs 2 GCs and annihilate them both with ease. Attack enemy OP is suicidal.

Currently, due to short sight from SE; Warp is not only unlimited, short cast and it is cast able during combat. Once you step out of spawn area you gained 15s immunity. It takes only 2s to reach main Flag with mount so you have 13s immuunity duration. All you need to do is warped in group and all run to main flag area and use aoe moves and your Summoners AOE stun to lock targets in the area. Recast warp when it has 3s left to again 15s immunity again. Repeat and rinse and enemy will drop like flies.