How about a more pistol oriented (wider slots) version of the VTAC barricade. You could set up strings like the current barricade where one string is shot from each port, or you could have different plates be engaged from different ports.
http://www.youtube.com/watch?v=FkbCMtTaPaU
If you wanted to sketch something up and help build it, I think that would be possible. Things I would keep in mind are:
1). Handicap accessibility
2). Acessibility for children, seniors, etc.
3). Angles of trajectory as compared to berm height (don't want to set up shots where misses could leave the range)
4). Time to "make ready". Don't want to set up a potential bottleneck that could take longer to get in position than it does to shoot.
5). Friday Night Steel has always been the entry level action shooting sport. We don't want to make it too tough for new folks to compete.
6). I want the finished product to look nice (painted, routered edges, etc.)
7). Don't want to create potentially unsafe actions. Need to include a place for people to set their bag, make ready, etc.
All in all, I think you have a good idea for us to try. I just wanted to lay some ground rules that may help you and others when evaluating potential designs.