T-Splines in Fusion unlike mesh tools in Maya Modo or Blender does not offer global local space which already is a drastic deficiancy
in case you want to use T-Splines in a usable manner and not have to model everything vertical to make manipulation easier.
Also T-Splines normal mode is quite odd and complicated to use
Just look at how based on a circular Loop selection Fusion shows the transformation widget and Blender does.
Fusion T-Splines here is really ok for some basic clay modeling but for task where you need better transformation widget control it is inferior.
I really hope the team will finally implement better custom orientations for the 3d widget.

