Fix spline editor

The defaults in spline are unuseable to anyone but a level 10 fusion expert. Maybe default to xyz and some some timing controls by default so adjusting a lower thirds is possible without 3 hours of youtube tutorials that all describe other functions of fusion. Or just make the zoom and playhead functional? Other wonders of the spline include missing elements for no reason. Exploding GPU requirement. This is the biggest waste of time and resources I've ever been forced to use for something as simple as a retiming a clip. Truly overkill for what 90% of the users are trying to do. Basic changes should not be tied to such an overwhelmingly complex editor.