Maybe the manufacturers will push for it. The way things are now, the consumer can buy a 'better' bike than a pro can ride. That's not great for the purposes of showcasing product.

I can't imagine anyone else cares, tho. Surely the riders don't, the UCI has historically been reluctant to embrace new technology, and I don't know why the other sponsors would be interested.

I guess I don't see it happening. The bike makers are generally not primary sponsors. Certainly there are exceptions, but I don't think there's enough clout there to change anyone's mind.