I think Dan is interested in feel and balance and the general overall users impressions of the knife. How will the folks with small hands vs big hands like it? Changes in edge geometry or subtle handle changes might be suggested. Even if the steel and handle materials are well proven and the general design is proven, sometimes subtle changes can make a good knife great. Think of the Ratmandu. How many knives have you ever used that feel that "right"? Most of them don't, even if they're Busses. It may well turn out that NO changes are needed for the Regulator. It feels pretty good to me. Having lots of testers out there using it in different conditions and sending their impressions and suggestions to Dan sure can't hurt.