This FoW frame is not really a measure in that way you think. The FoW is a written stuff with static spawns in place and time. The key there to use the elevation, kite and avoid damage and chip the enemies away one by one. And have good aim, nothing more.
Best way to know it: see damage taken at the end compared to others. See how many kills the player has compared to others. I see lots of guys who rush, dies, and then on the scoreboard they complain about we are the worst, because we did no damage, but him. with a WS its not that hard, i know.
I alaways try to tell the others that when horde comes, fall back to a place where you can narrow them down, you wont be surrounded, etc. WSs like to ult vermin patrol on sight. Just an example: I told them we need to kill the patrol (i better deal with them rather them get killed when horde is on). Go to the ladder, because when we aggro, they need to climb, and when they do, we can kill them in a second. Elf aggroed them on plain, he got deleted in a second. Complained a lot that i have the FoW frame by the “cheesy way”… sure, skill and brain get you win the game, not an OP career without any skill.
The problem with this in my opinion, is that FoW frame just tells you that a player could learn how that map works, and he/she had other 3 friends who could learn too. And of course they have some skill.
A player who uses the ping, looks out for other, stays back, when he sees that someone got back a little and wait for him not to get cought is a value on the team. Everyone has a bad mood, everyone plays bad on some days. I have the FoW frame as well, and we had much attempts, but after a 10ish, you realize how it works.
I think you guys all remember when cata came into the game. Everyone stayed close, looked out for each other, because this is a new diff, very freaking hard, and we need to work together to win. Now? If my friends and i cannot play together for some reason and i join in to randoms, i saw straying all the time. the 90% of these are fails. players cannot even dodge a hook. I remember i showed one of them that when you need to dodge, we didnt killed the hook for that. he got hooked 6 times in 10 mins.