Toggle Editing Tools on and off by holding down a key.
Some editing tools are used only for a very short time. Such tools as Razor Tool or Track Selection Forward Tool can be toggled on while holding down a key (C or A), and toggled off while return to the default Selection Tool when you release the key.
Nicholas Papps commented
This would be HUGE and speed up the workflow to enable this somehow.
YES to this. It works this way in Photoshop, and having this function in Premiere (for the hand tool and zoom tool, especially) would be such an improvement
Very much yes to this. In Cinema 4D this is called sticky keys where a second tool is temporarily evoked when a tool shortcut button is held and reverts back to the first tool upon release.