Thanks for pointing this one out. It worries me a bit too.
Should I then - ideally - use BB and DR at different times? I know, they don't profit from each other, they just "share" a CD (as in: they got the same CD-length).
Because now I want to use bloodbath when it hits hardest - enrage/CS up.
I want to use Dragon roar when enrage is up but ideally not when CS is up because of the reasons you just mentioned.
At the moment this decisionmaking would overwhelm me
...
I'm still too close to "AMAGAWD CS' COOLDOWN'S UP GOTTA SPEND MOAR RAGE" especially when I'm bossfighting.
I even consider taking Cleave/HS from my bars for the time I still need to learn my rage control