As you can see there are some rally cry's that you are out right wasting as they are cast at the same time.
I didn't go over all the other CD's but looking at these it looks like you need to fix the cd assignments a tad to better cover it.
If you are looking at improving yout dps you could also set upa rotation of your skull banners... as you can see here you are also wasting a lot of skull banner potential up time for the entire raid by overlapping them! Anything cast 10 seconds before the last warriors cast is a significant raid wide dps loss!
[22:40:59.725] Trogxar casts Skull Banner
[22:41:27.058] Katypärry casts Skull Banner
[22:41:39.788] Pokingyou casts Skull Banner
[22:41:43.551] Chaostheorÿ casts Skull Banner
[22:41:57.950] Coltraine casts Skull Banner
[22:44:17.164] Trogxar casts Skull Banner
[22:46:08.869] Pokingyou casts Skull Banner
[22:46:28.153] Katypärry casts Skull Banner
[22:46:29.718] Coltraine casts Skull Banner
[22:46:32.905] Chaostheorÿ casts Skull Banner
[22:47:19.316] Trogxar casts Skull Banner
[22:49:
31.383] Pokingyou casts Skull Banner
[22:49:
32.345] Coltraine casts Skull Banner
[22:49:
37.417] Chaostheorÿ casts Skull Banner
[22:50:28.933] Trogxar casts Skull Banner
You can see there 3 banners cast that covered a time frame of 16 seconds instead of the 30 seconds of uptime you should have gotten for those 3. That is a HUGE loss for the entire raid. If this is a case of people using a "I win macro" and just using that all the time rather than casting banner alone then they should really swap at least for the next couple of fights as you can't waste that potential raid wide dps! It would be one thing if it was just a personal boost but that is a huge raid wide buff
Hope this helps!