Creating one single surface from multiple surfaces

Hi all,

I am trying to create a single surface from multiple surfaces, like the four shown below.

To try and solve this I created a square grid and used surface morph to morph the grid geometry on to each surface.

I then used loft on the curves to create a surface, the result is shown below.

From this I ask:

Is any way to improve on this method and create a single surface?

How can I refine the set of curves created by the surface morph, so that they work correctly with loft?

Are there better ways to create a single surface from multiple surfaces within Grasshopper?

Thanks in advance!

Ben