Longer! These bikes have geometry stuck in the dark ages. There are numerous forum reports of riders complaining of head shake, esp with a loaded rear rack/pannier. If you ride down a hill and take your hands off you quickly realise you can get into a tank slapper with the slightest provocation. Longer reach, shorter stem and slacker head angle would solve the stability issues and allow more people to fit frames with a little tweak of stem length without resorting to 100mm stems that put body weight out over the front axle. The Fastroad has a reach of 404mm in L size with a 72deg head angle and 90mm stem. IMO it should have 450-460mm reach, 40mm stem and 68deg HA. It would be far more stable and still perfectly nimble.@gorse I'm curious about your comment about the reach. Can you be more specific. Should it be longer or shorter?
(I have a bunch of mtb and road bikes, none have stems longer than 60mm or reach less than 440mm. My L size enduro MTB has 475mm reach, 40mm stem and 64deg HA. You can ride any of these bikes down a winding road without hands on the bar).