Less chamois! I know there are some manufacturers that still use thinner, narrower chamois on some of their shorts, but they're getting harder and harder to find at LBS. Too-thick chamois are incredibly uncomfortable over long rides, and too-wide chamois are uncomfortable at any distance... tri shorts usually have a chamois that is comfortable for road riding, but the legs are way too short to be comfortable on bike-only days. Also, chamois size better matched to the size of the shorts.