IMO:

*Making my own Emblem, and putting it on my weapons.

*Hacking enemy equipment and killstreaks

*Lightweight Perk

*Wager Matches

*Currency to unlock weapon camo and attachments without having to go through time and effort.

*Changing the contents of the Care Package

*The Blackbird

*Jammers actually jamming equipment

etc...

~RUGGED SAVIOR