So I worked on another map the last two weeks (been very busy lately) and this is the result. One thing I do not like about the style was how secret doors and such were presented. As I mentioned in my previous post, I think I have solved that with the symbol being moved off to the side a little, into 'the rock area' or walls, which if you set up dynamic lighting in Roll20, the players should never see. If you are really old school and are printing these off (see PDF below), just grab a sharpie and fill those symbols in, that should work.
Anywho, I am really digging on this style. I still like all the hatching too, it has a certain magical feel to it, but damn it all if this does not take me back to my early days in the hobby. Nostalgia is a powerful and wonderful thing.