One thing I love about AutoCAD is the ability to instantly Freeze or Turn Off a layer just by starting the command and clicking layers off.
It would be a real time saver if I wanted to turn off a categoy in the architects model, without having to go through V/GO and spending time guessing what the mysterious "hatch" pattern is that's showing up. It's a lot of guess work. I would love to see a tool similar to the LAYOFF command from AutoCAD, which would allow me to clock an element and then a warning message pops up saying "This will turn off all elements under the category 'Generic Models.' Are you sure you want to continue?"
Thanks,
-Kempton