The best time you guys had to suggest that, was during 1 year off season we had. Doing this kind of change to 5.4.8 would make server loose a lot of players, gurubashi, pver's etc. Due the new annoying bugs would appear.
I agree that warrior got something wrong, but atm best thing we can do, is searching for it.
Also i noticed that shaman's mastery when applied to a warrior, all his mastery spells get strongly weird. Check this video from bajheera for example, his Opportunity strikes procs once per 3 - 4 seconds, sometimes lower, but its still a big time between procs, But sadly atm for devs its working proper. Since atm on pandawow we got like, 2 opportunity strikes per second.