Really good info here guys. Many thanks for speaking truths on the matter. As tbill and teamfubar stated, it's about landing area from tube to tube, and in the crank department, we get to use a lighter crank (by about 100grams) and have the benefit (especially on the road bike) of a slightly narrower Q-factor.
For now the inset will be used in the MX RSL...yet to be convinced on the road. It's a tuff position to be in, we know the oversized headtube will be stiffer, but it also adds weight. When building in ti, it's not that easy making a light frame that is also stiff. We have to pick out battles. The Vamoots RSL is a great balance of those two items....stiff, yes, stiffer than our standard, light....yes, lighter than our standard and we feel very competitive with carbon in those ways. Maybe not as light as the lightest carbon, maybe not as stiff, but close on both accounts. Factor in the amazing ride quality and durability ....and you get a true Moots product that is cutting edge in the world of disposable machines.
The guys here at Moots; Butch, Brad and multiple others that get to give input on our products have really risen to the challenge when taking the RSL family from a thought to a finished product. It personally blows me away each time a throw a leg over mine and ride or race....