Jim's plate seems pretty full already. I do not see him having the time or a reason to offer any new models. IF he can sell them faster than he makes them already, why add more products? I see it like a restaurant with a menu that has too many choices. It is good to keep things simple if it pays the bills.
I would like to see in no particular order, a late, slim, 40" BBL, percussion long rifle, a Carson size Hawken, and an English percussion target pistol.
Instead of CNC machining a patent breech, why not do the drum like CVA? That would save making an intricate patent breech on a long rifle. Make the drum out of good steel, like 4140. I see no need to make the breech plug so tight as to make alignment of the drum a problem if the plug is ever pulled.