Keep it the same, and keep the damn physics of the bike the same too. But fix the front tire.
I don't feel like relearning a new Phoenix again. Especially because I had to learn 2 new bikes in Evo.
It was a cool idea but the bikes for the most part were pretty trash.
In any race you stretch as far as possible to cross the finish line. In Trials, if you're flat on the ground, you can push your head furthest out. Head should have to cross checkpoints... Maybe a different way of crossing checkpoints and the finish line though? First little part of bike or rider to cross a finish line should end it.
I don't like thinking about it. I would like it if rotation did not cause the player to gain or lose time. Think of the player as being a perfect circle with the center of it being the trigger point. That would take any luck of finishing the race a tiny bit faster or slower out of the equation.
I like the head being the trigger for obvious reasons (easy to see, you can just get that few hunderds of a seconds faster while leaning forward).
As for people saying checkpoints being triggered too fast, it can easily be solved by not giving you the checkpoint if you fail like 1-2 seconds after triggering it.