Yeah, I like the system Grendel mentions it's close to most CAD packages assembly tree layout, but then I like PaQ's idea about the quick access on/off/hide system.

So that last graphic you have there Grendel is the best of both worlds, which is cool, but, the size of that tree is a bit big, I thought anyway.

So I stared at MoI for a while and had this in mind, so I thought I'd throw it out here for discussion.
It was quick so I might of missed something.

It functions like the OSnap except it has 3 clicks for the tick, which are ✓ for normal operation X for Non Selectable and blank for hide and the rest is self explanatory.



~Danny~