I'm not really sure what is going on on that video, I didn't see what you were talking about in terms of fear debuffs, but you can always add any debuff you like to grid and have it display on the icon in the middle of the the characters unit frame. I personally have my mounts on there, so that I can tell at a glance if someone didn't mount.

Handling short duration cooldowns is a lot more tricky, perhaps some people who have pvped in the last five years can help you out. I know I've fiddled with using raid cooldown monitor type addons, but for the most part I think people just put their totems on round robin and hope for the best.