I hope they do come up with a measurable, enforceable, alternative rule that has a similar end result (maybe saddle no further forward than vertical through BB AND extension no further than 50mm or 100mm from the front wheel roll-up test vertical wall). I don't think it's a good thing to allow the potential for position to differ so wildly from what's allowable by the UCI.
Arguably more crossover with triathlon than the UCI. Very few UCI TT races (on TT bikes) in the UK, but plenty of triantelopes who do CTT events and vice versa.
Fair point, and will probably increase participation.
My other worry is that everyone settled in a previously legal position is now effectively at a disadvantage. As there's no arbitrary line in the sand, 2017 is set to be a piss-taking arms race.
I hope they do come up with a measurable, enforceable, alternative rule that has a similar end result (maybe saddle no further forward than vertical through BB AND extension no further than 50mm or 100mm from the front wheel roll-up test vertical wall). I don't think it's a good thing to allow the potential for position to differ so wildly from what's allowable by the UCI.