QUOTE (cryptoknight @ Apr 29 2009, 11:56 AM)
Else, what's to stop a player from downloading all the denver missions, making up rewards signing the missions report forms as somebody else and showing up to NYC with 150 karma + a pile of nuyen and gear?
Nothing really. And it probably won't matter for single FLGS games.
At major events where there are several Missions GMs, it's usually noticed. Someone who cheats almost always cheats on more then the character sheets. One thing to keep in mind is that the Missions GMs at major events actually talk to each other on the Secret GM Psychic Hotline. (All kidding aside, I know where and who most of the other Missions GMs are, and we do have means of communicating to each other if there are questions.)
I'm not sure having a central record keeping step is worth the hassle and cost, it's not like the Demo Team and Catalyst are losing money when someone cheats this way. That person is cheating themselves most of all, and perhaps some fun is lost for other players at the table.