We do not measure offset as a part of the MPF equation, but generally clubs with more offset will have a greater rearward cg location, which is part of the equation and will affect the MPF in a positive way. We do look at the offset and do measure it on our designs, of course. The reason there are a lot of models that have progressive offset, with more offset in the long irons, is that more offset can be a game improvement feature. More offset in the longer, harder to hit long irons improves the rearward cg location and allows more time for the clubhead to square in the impact zone. All that being said, you do not have to have a lot of offset to have a club that has high playability. As an example, our DBM and TE cavity backed forged irons have very little offset (.100″) and are both Super Game Improvement designs. The playability comes down to the reaward cg, the horizontal cg and the vertical cg, as well as the MOI. The amount of offset one pays comes down to whether or not the player likes the look with more offset, and if the offset enhances their ability to hit more consistent shots due to the reasons I mentioned above.