I know archons are the most versatile unit in the DE codex, however I personally feel they could have a bit more going for them; such as an archon on a tricked out jetbike, or a hellion/beastmaster's hoverboard. Considering almost every other army with bikes has a leader on bikes (chaos, space marines, pretty sure eldar have an upgrade pack or something, orkz). I feel as if there should be a speed freek-esque group (a more machine based haemonculi coven maybe?) who try to get the fastest, deadliest, and most tricked out vehicles as possible.