Really good mod you've made here! It feels excellent to just soar through a level as fast as possible! In fact, I've discovered it's possible to speed through RVZ without actually losing any speed!
There is one tiny nit-pick I have though - I feel like going up and down during flight is way too slow. In ACZ1 I was able to get to the road bridge in 20s, but it took a further 15s to go down that steep hill after it. This is why I'm only giving it 4 stars, and not 5.
But still, you did a cracking good job here, keep it up!