Assuming the demo game is still on for next Thursday, I wanted to get some feedback on what you wanted to do with it.
I can piece together some short encounters and such from various sources to hit a few of the bases in 5e, so it's really just a matter of what characters you want to play with. So far, I can come up with a few options:
A) Level 1 or 2 characters we quickly make on the spot. It's surprisingly fast to produce them - trust me, I've made an embarrassingly large number of them.
B) Higher level characters (3-5?) you show up with. This can let people test the direction a potential concept could go.
C) Pre-gen characters that I pass out (probably at level 2 or 3)
D) Everyone just brings the character they plan on playing in the campaign
E) The Andor special: roll randomly for race, class, ability scores, and then make it work!