In general I think the tilt feature needs more time in the oven; some mounts work really well (especially while flying) with the extreme tilts, some look really weird and should be kept subtle. Square I think needs to look at the tilt on a mount-by-mount basis and go with gut intuition on what "feels best"; it makes sense I think for a motorbike to have an extreme tilt on the ground, but I think a Chocobo works better with a more subtle tilt. In the air both would work with a more extreme tilt. A slider or extra options to exaggerate or dial back the tilt would further help with those who want a little bit more or less than what Square thinks is good.