The first response when it hit the game was perk it, if a V-base starts flashing it's almost guaranteed you'll see 5 WW's sitting on the base. For some odd reason I do see the OSt a little more nowadays. Even if the WW is fixed, it'll still be used, but not as much I don't think. Also, the WW's ENY needs to get lowered. Maybe to 10 or 15.
The Osty can reach out and tap incoming bombers up to 4k or so (I can't do it, but others can). The ww will only hit out to 1.5k. If you have incoming bombers coming to a vbase, an osty is actually more useful. I think that's one of the reasons you see them more, as people realize this.
I would be more than happy to see the WW have its rate of turret traversal, and rate of fire made more realistic. Notice the magazines on the 20mm guns, and yet when does the firing ever pause to let the gun reload?
They may be working toward this reloading pause in wirbles. Have you guys noticed that since the last update, the ack guns on a base now fire in bursts, rather than continually? Maybe they're testing this out using the auto-acks, and the wirbles will see this change next.