I change crossbars to help. I have a crossbar dedicated to AOE and the other dedicated to Single Target.

I do macro my defensive cooldowns together (except Superbolde) and have Bow Shock, Sonic Break, Blasting Zone, and Rough Divide on a macro. I then have a locked, full time on-the-screen bar dedicated to macrod actions that act like a visual timer for me (or if I have to, mouse click the action).

If you plan on doing any savage, extreme, or ultimate... I would stay away from stacking oGCDs like I do in macros. Macros can delay actions, and we don't want anyone one to eat a full TB because their macro'd Rampart failed to activate in time.