For attacking, my new strat (after learning about the "ticks" on the door, thx to Polymerize) is to sit in view of both the door and the defending respawn door. There you can count ticks, burst down at the right time, CC someone that's going for a friend capping the door etc. In the first zone, you can even be next to a pilar while watching both, meaning you'll be able to abuse the LoS.
Nice guide Poly!
Thanks! I'm excited and motivated to know that some people understand the message I'm trying to convey; and are more importantly trying to implement it into their gameplay.