I'm totally for banning M320 and RPG on Metro. Also put a limit to hand grenade kill (say 5) per round. The whole point of metro is to have fun and level up fast. All this spamming takes away the fun. You can still level up but is sitting on the corner with 320 and spamming it throught the map worth it? I personally only have like 20 kills with 320...had to do it for unlocking smoke...I just find 320 dull and boring.
Metro can be a decent map. In order for that to happen, spamming needs to go away. I'm not making this out of thin air. Whenever the server has less player (hence less spam) and when most of them are level headed shooters (hence less spam) the map can be fun. Also, there are few servers out there that ban M320 and RPG...and they're loads of fun and full 24/7.
There are tons of metro servers with everything allowed like ours. What makes our server special? Nothing so far...which makes it hard for it to fill sometimes.
If we have M320 and RPG ban (and grenade restriction), we can have some unique thing going on. On top of that, our server are properly moderated. Today in BF3, servers lack moderation most of the time - you can see cheats run wild. On top of that if somehow there are admins, they're usually abusive of their powers.
I would also consider reducing down from 1000 tickets. 1k ticket takes just too long. On top of that, game still crashes for a lot of us...and when it does, losing all stats is not fun at all.
Bottomline: Metro + spam restriction + lesser ticket + proper moderation = 24/7 FULL SERVER.
EA's EULA Terms of Service forbids banning of weapons or attachments on ranked servers. Its been brought up before but it wont happen. I am against it for other reasons as well. You seem to do fine even regardless of the M320 and RPG and it is possible to sneak past and back capture A or push back the American team with all the spam going on.
BC2 mods have stated in the past that server with restricted weapons (ex pistol only server) are OK!