While the FaderPort 8 does extend / replace functionality it is not designed to replace the mouse entirely.
If you are looking to speed up your workflow, you'll need to rethink your setup. This is how post houses in Los Angeles operate.
Perhaps you should consider remapping all of your key commands to workflow that works for you and acquire a Macro assignable key controller to aid in your pursuit to remove the mouse.
Look at a product from X-Keys that allows you to link macros together under single keys (albeit from their device) to allow this kind of workflow.
Also consider incorporating a customizable MIDI trigger interface to map MIDI mappable functions to single MIDI button or key strikes as toggles. A colleague of mine was Stevie Wonder's personal assistant for 8 years and he had him using 3 or 4 Peavey PC-1600x units with Cubase so Stevie could work without any assistance.