I am a little late to the Pandemic Board Game scene, but it is a really fun co-op game. I have had a lot of fun playing it and using the expansion On the Brink. My gaming group isn't the biggest fan of the Bio-terrorist Challenge, so I decided to make a custom role for the unused Black pawn. I present the Bacteriologist:
The Bacteriologist isn't as strong as the Scientist, but the Bacteriologist helps other players use their City cards without just discarding them.
Right now this is the only card I have made and I am not sure I will make more but if I do I will continue to use my custom symbol:
Who knows maybe I will have my own small expansion at one point.