Essentially this, but it'd work in Survival too because fighting for power ammo and central map control. In Countdown, the goal will be to position around the objective and prevent flanks. While in Survival, it'll be about playing strong positions and power ammo control. It sounds similar to what we have now, but amplify it, then you'll start to see the difference. Smarter gameplay will be rewarded more, and unnecessary aggression/passiveness will be the downfall of many. Not to say people can't be aggressive, they just can't be mindless about it anymore. And most of all, sound cues from double jumps(especially Blink)will be [i]much[/i] more important to watch out for, and to make sure you're not alerting your enemies to yourself through this as well when possible. Sound cues in general will be a big factor, but those are the most audible outside of abilities and gunfire. Footsteps are audible, but not very much so.