I know someone working on lavender laced gold sebrights in AUS, they look cool.
Your best sellers would be the common barred rock, rhode island red, white leghorns for locally but your big sellers would be a new color fad like buff columbian rocks (I can tell you how to make them if you want) or some other cool color that isnt that common. Think about the past breed/color fads, there were silkies that were huge, then barred rose combs, cuckoo polish, dun polish, BLR wyandottes, and some others. Maybe work on chocolate(dun) in a new breed like cochins or ooo maybe chocolote leghorns. Maybe make crele leghorns (another simple project, this one could be done with 1 cross) or something else cool. Dang I could keep going and going for cool new possible projects that would only take one or 2 crosses and most of them would be within the breed so no outcrossing.