Pugs vary. Can be instant to 5-10-15 minutes depending on day and time of day. Rough average is probably 8-15 minutes overall.
We're having a lot of wargames recently, and they are actually starting to get quite decent.
A little more info on wargames
here.
Best (competitive) classes are:
DPS: Boomkin, Arcane mage, MM hunter, Outlaw rogue, Ele shaman (getting nerfed next patch though).
Healer: Disc, Monk, Rsham.
FC: Rdruid.
Wargamers currently involve people like:
Buns, Chainz, Replay, Nairh, Vianco, Robbi, Vet, Trigs, Juan/Milkweed, Raz, Partygirl, Riplol, V (Verenyx), Prague, Wabz, Blackout, Quack, Nature, Stabilt, Sonny, Lopio, Kalmah, lild, Bastu etc.
You probably know a few names mentioned there.
Guilds involved:
-Better Luck Next Time (Horde, Draenor).
-Soulbound (Alliance, Ravencrest).
-Bestest (Alliance, Ravencrest).
There is also an upcoming 3v3 tournament with prizes on the line, such as money, ingame gold and #xpoffFame.
Currently in need of a rogue that can show up most of the time to mirror Nairh as Blackout isn't always available. Other than that it should be whatever. Currently Chainz has been playing rogue from time to time, but ultimately, the ideal situation would be to have Chainz and Buns FC'ing.