Re: The Ol' Cross-Genre Bait-and-Switch
I did exactly this at a con. I told the players to make PC before the con. the PC would be frozen then awake in a post holocaust world...think Morrow Project. In the first session they meet a mad scientist and start getting attacked by a paramilitary force. They activate a device that shoots them through time and space. One PC has a device that can shoot them again once some condition is met. Think Sliders, Time Bandits, or Dr Who.
The PC were surprised but rolled with it. One key thing I did was to give the PC a chance to do a rewrite. I also gave them an allocation of free disads points to replace existing slot. With the time period constantly changing hunted and such don't really work. Since the time period was constantly changing it was less of a hardship. In fact if the PC died or new players started they had to play PC from the target location. Thus now the group consists of a football star, a western scout, a victorian actress, and a 6th century monk...tons of fun! Since I ONLY run it at cons it works fine.
My players nicknamed it Time Traveler DI and it stuck.