Sure, just leaving out the vertical axis works. And I did convert all my 1D Blend Spaces to 2D default versions. Still not getting the point, and my suspicion is (not having checked the source code) - that this may not be as performant.
BTW: finding this post by @MostHost_LA makes me rethink that Blend Space stuff. Cite from him
Or if really needed the 1ds for speed variations.