This is so there's consistency.
Since it's NURBSSurface, then it makes more sense to be NURBSCurve instead of NURBS3D which is ambiguous, both NURBS Curve and a NURBS Surface are 3-Dimensional.
Depending on how the Import/Export tool is implemented it could have minor or major impact.
It's an enhancement so, if accepted this change may happen from version 3.0.0+ or 4.0.0+.
This is so there's consistency. Since it's NURBSSurface, then it makes more sense to be NURBSCurve instead of NURBS3D which is ambiguous, both NURBS Curve and a NURBS Surface are 3-Dimensional.
Depending on how the Import/Export tool is implemented it could have minor or major impact.
It's an enhancement so, if accepted this change may happen from version 3.0.0+ or 4.0.0+.