You can't beat 3200 v 3200 Conquest 'Large' on Metro! You'll be sweating by the end and probably go 99-97 or something crazy.
As long as they keep official severs on the side along with the additional ranked dedi ones; it should offer people a lot of choice of matches.
As Scipio mentioned; badmins can be an issue but on the whole most servers can offer a very good and balanced experience. You get the occasional dick head admin who can't bare to lose games or wants a high K/D so they have teams of 32 against 27 or something and if they are losing, sometimes they switch teams to keep their W/L record up. It's kinda pathetic but there are plenty of solid servers out there with responsible and welcoming owners.