TC lasts long enough that it would require a /click to get timing right. I dump rage with more TC and cleave if I have loads to spare. My warrior runs mostly with my single target dps team, when I run him with my shammys it can be an issue if I CL too much to fast. I find that keeping the spam button simple keeps me from unloading too much rage.

I remember having rage issues in the past with high avoidance, not getting hit = no rage in the old days. I think they tweaked this a bit.. but honestly my pally tank is so ez-mode I find the warrior to be a bit fusy so I don't run him as much.

As with anything, personal taste / playstyle and encounters means you get to play with it any way you want. There is no set rule on how you do it, my methods are just starting points. By all means if you really want to tweak out a prot warrior macro go for it! But post it after you do.