Toggling active take info has been a major annoyance (it was'nt even scriptable!), but it looks like Sony has addressed this with the 6b update:
"The following settings have been moved from Preferences > General to the View menu, and keyboard shortcuts have been added for easy access:
* Show/Hide Event Media Markers: Ctrl+Shift+K
* Show/Hide Active Take Information: Ctrl+Shift+I
* Show/Hide Waveforms and Frames: Ctrl+Shift+W
* Show/Hide Video Event Buttons: Ctrl+Shift+C
* Show/Hide Event Fade Lengths: Ctrl+Shift+T"
* Show/Hide Event Edge Edit Frames: Ctrl+Shift+O
http://dspcdn.sonypictures.com/readmes/vegas60b/vegas_readme.htm
Its encouraging to see these fixes made available.
I still have not decided whether to upgrade to V6 yet, but this is a point in favor.
Randy