i have just written about this elsewhere, but thought it may be useful here too. while it’s not keyboard related, i find that a combo of the mighty mouse and usb-overdrive help streamline my working, since i can map keystrokes to any of the four button-press options available, and set them up differently for seperate applications. so things like shift+z and command+option+q (my export using quicktime conversion shortcut) are available on the mouse. also makes scrubbing in the viewer and canvas possible with the scroll wheel, which any scroll-wheel mouse will do – just as with moving parameter sliders, pointed out above.
customising the keyboard is great, and i wish this was available in soundtrack pro. i have mapped / to toggle the link function, since i find shift+l too tricky (or i’m too lazy), and . on the numeric keypad is mapped to the ggg shortcut described earlier. i also cycle through the composite modes with mapped keystrokes. control+v is nifty for slicing everything at that point, audio and video over all tracks.
a final great tip for anyone who doesn’t RTFM is that when in the canvas you want to nudge a selected layer, hold option and use the directional arrows to move it. adding shift will move it more. this also works in the timeline, although it shifts the clip up/down to the next layer if it’s open.
Learning something new everyday