You've just taken what you think the intent/design of the spec should be and used that as an assumption that it's the same as Blizzards vision. Also, it should be noted that most of us would consider a spec with extreme downtime via RNG built into the spec as a terrible design choice for making engaging gameplay. Anything over 20 seconds wait on CS resets feels disgusting and gimps the gameplay.
The 30s CS cooldown change is only a good thing, even 30 seconds downtime is fucked.
I never understand the Warriors who say "oh we're top damage, we should be nerfed so hard that we're underwhelming, because".. Some class has to be top damage, and as amazing as it might sound it's fine for that class to be Warriors, we've been there in the past without needing nerfs, in times when class balance on single target was a thing.
But no these days Warriors are so conditioned to being not top damage that they ask for nerfs when they do get there "I don't think you nerfed us hard enough Blizz, I'm not a fan of playing this spec and I might still do good dps so could you please nerf us again, thanks".
Have some perspective here, you're talking about heavy nerfs to a class that was competing with a few other specs for number 1 single target, while requiring a legendary nobody has to do cleave and having zero sustained AOE, burst AOE only if you blow all your cooldowns gimping your single target for it. Meanwhile other specs are doing 4-5x as much dps with ease on AOE whilst being close enough on single target.
But fuck it, maybe 400% behind on AOE but we're 10% ahead on single target so nerf that shit by 30%!