I think there should be some sort of Medal System... Similar to the one in Halo except when you right click a player to check there stastics there was another button you can click to view a players a medals in a large box with a slot for each medal. Although it would also show the multiples of each medal you have if you get the medal more then once, but you will not gain EXP for the medal more then once. The medals should look a bit similar to Halo's as in weird symbols like that.
An example would be this: (These are a some medals from Halo 3)
Of course they would be scaled a lot smaller. You would get a little bit of extra EXP for each medal you get but only the first time you get it.
You could get medals for thinks like:
Weapon Mastery - Getting 5 kills with every weapon (accessible to the basic player)
Massacre - Killing multiple people in a row
Tazed - Killing someone with an Electron
Running Man - Getting a very high bounty
Hitman - Killing someone who has a very high bounty
Scout - Killing 100 people with a knife
Bunkered - Taking all bases in one match
MANY MANY more ideas are known for different medals but these are just a few I have listed!
I takes a certain ammount of skill to do certain ones, depending on how hard it is depends on the extra ammount of EXP you get from the medal! This idea gives everyone who has done just about everything the oppurtunity for some new stuff! If there was a lot of medals then it would be great... So tell me what you guys think about this idea? If you have any ideas for medals then put them in a format like this:
Medal Name - How you obtain the medal