I plan on running an introductory scenario for Base Raiders at my FLGS soon to boost awareness and spread the fun! I initially thought about using Transit, but I wanted to toss out another idea for something shorter that would lead right into using powers and combat.
Here is my idea: the players begin the scenario on a tour of a football stadium. I am torn as to whether or not football is still an active sport (not sure what is more appropriate in the Base Raiders universe). The result will be the same: underneath the stadium is the team's secret lab, where the owners have been secretly giving the players super soldier drugs in order to win.
So, the players are taking a tour, and the city is attacked. The group attacking is using crazy seismic power stuff to cause an earthquake, and the collapsing stadium opens up a path to the underground lab. In the lab, there are LOTS of powers sorted by numbers 1-100 (to correspond to the football player's number), each with a different ability (e.g., massive strength for linemen, bull-rushing for running backs, crazy speed and dexterity for receivers, etc..). The players would then use those powers to escape and join the fight above ground.
Any suggestions? Again, this is just a very simple, very brief scenario intended to get players cool powers and use them quickly. I thought the football theme would give them an easy way to guess the powers so they can play with the abilities and have fun with those right away. I don't want it to be something that starts a campaign, but just something to get players used to the rules and "sold" on the idea.