I would like to see a standard barrel size among all manufacturers. When you have multiple muzzleloaders and all of them need a different sabot or bullet to fit the bore, it gets frustrating and expensive. I would also like to see better propellants. The Blackhorn 209 is a good start, but it has it's issues too.

Actually, with modern tooling and technology, I think tighter tolerances should be achieved with all aspects of modern muzzleloaders. Take primers for example. Why do they have to be so many different lengths. I understand different strengths of primers, buy can't they all be the same size?