Unless I'm misunderstanding your requirement, we already support everything you have specified except for on wake data.

If you want to extract surface data (e.g., Cp, Velocity as contours) then you would follow the technique described in the tutorial "Fluid Flow Around a Sphere."

For on-body and off-body streamlines review "Particles or Streamlines." For the off-body streamlines you'll need to define a volume, that encloses your geometry, through which you want to view the streamlines.