I think overall the addition of the flying tilt is great.
However, a lot of them seem to be tilting too much, and the land tilt feels rather wobbly.
This is especially true for the chocobos; for the draft chocobo I actually got a bit motion sick.
Here are some suggestions:

1. Reduce amount of tilting
2. Two toggle features so flying tilt and land tilt can be turned on or off separately
3. Tweak tilting speed so it either only tilts for severe swerves and not small direction adjustments, or starts tilting slowly and recovers quickly, to reduce the wobbling effect.