If you are a developer, please build MegaGlest on your own and get in touch to contribute (or post your patches on the forums).
[img]http://img207.imageshack.us/img207/1525/buttonwindoweditingpane.jpg[/img]
Instead of hiding everything, you can just go into wireframe mode.
Just use X-ray.
[img]http://img689.imageshack.us/img689/252/p1220077.jpg[/img]
[img]http://img163.imageshack.us/img163/4876/p1220078.jpg[/img]