@Marenghi your right but i think Shanghai siege has been well thought out, you get so many Recon some times on the roof tops just camping but not taking flags and they always lose the game also armour + heli's picking them off.
On foot the streets are very tight for recon class plus when the skyscraper comes down its hard to snipe because of dust, to me a very well designed map......
So therefore Recon has to play more of a main roll (Help your freakin squad for once instead of camping)
It would be interesting to see when the full version comes out if you can stop the skyscraper from falling in the settings, that would change the out come quiet alot...