Tim,
had to suggest a body shape for an aircraft for a CFD demo. I played around with the new mesh tools for this shape.
In the demo they discovered unstable separations in high alpha regime.
To their surprise i was able to come up with a modified shape that worked around 2 minutes later!!!!
They were totally flattened by this. As they considered a day or more work for the generation of the shape and around 4-5h for changing the contours.

A tutorial for general mesh handling, closing of holes, local subdividing of meshes etc. would be a great thing. I used the block mesh tool and detailed everything with add loop tool. That inserts details/vertices that are not needed and that complicate the mesh structure.