If I'm not mistaken, you can only do one action bar per macro. I only have one of my tanking classes above 30, and I already have 2 bars full of actions for my tank setup, not to mention putting on gear, which would be its own macro. As is, I haven't updated my macros in ages (laziness, granted), but even if I did, one button to do everything would be much nicer than four buttons and waiting for my character to flash in and out of existence for each piece of gear.