there's been a few experiments over the years, but the idea has yet to stick. with the recent success of long travel big wheel enduro rigs, it seems dh is ripe to follow. perhaps not a wholesale change, but i imagine large hoops would have to be faster on some tracks. curious who will debut on the wcdh first.
here's a soon to be launched production rig from alutech. not entirely pretty, but i like the sentiment: