Sharkskin will go over top and warm thi gs up too. I've worn mine with success both in and out. It's too big for me but oh well, as long as it does it's job and it dries nicer than Lavacore.
I don’t understand your logic.
Customers are spending $$$$$$$$$$$$$ for a custom fit wetsuit which uses non-compressible Rubatex. Why are you suggesting a compromise to “make things better”?