I agree, one level to see the change would be plenty, IF you know what you're looking at..
I, as a Jedi Guardian, lvl 50, could have rolled an alt on PTR, seen the change, and realized THEN what all 4 loaded bars would look like......Fact is, I Beta tested this game already, had seen my own and many other peoples bug reports, suggestions, and the like simply ignored. So BW as a whole can go blow a horn....
If you do NOT have a full level 50 melee class, on ANY server, seeing one bar with this new crap won't seem so bad.. with 4 loaded bars, on a lvl 50 melee class, NIGHTMARE.
Some people are medically challenged by this also, and I'll take MOST unkindly to someone bashing say Epileptics, or Photo Sensitive people, as I've already done to a few morons out there.....
Hey, if the GCD is good for you, then good for you......
This CANNOT be fully seen on the PTR, unless, again, you have a lvl 50 melee class.