This is what bothers me most about survival. I'm not against survival (I preferred it staying ranged, but what's done is done); I'm not against complex rotations or higher skill floors and ceilings. I love a spec with some depth.
But survival is complex through clunky design and that's something I don't like.
Stuff just doesn't synergize right and that irks me. There are two separate parts of your rotation; the part where you apply debuffs to the target and buffs to yourself and then the part consisting of mongoose fury window where you dump direct damage into the target.
These parts should flow well, they should synergize in some way; but they don't.
The DoTs don't interact in the burst window and they are so short they tend to fall off during the burst window; this leaves a somewhat unsatisfying feeling because they are so low on the priority list that you generally just disregard them. And that's where the clunky feeling sets in; the feeling of "I have to now disregard 90% of my entire toolkit as I'm now in a window where I have to spam 1-2 keys as much as possible for the next 15 seconds."
It can be better, look at shadow priests; they have something that is quite similar where they have a cycle where they apply debuffs and do more basic attacks and then a bursty window (void form), and that flows much much better for some reason.
Maybe because there is some synergy (e.g. Void Bolt in Void Form increases the duration of the DoTs applied by 3 seconds); maybe because the approach is much more simplistic and elegant without really sacrificing on the complexity much.
I think they need to take a better stance on what they actually want survival to be as a melee spec. It needs a little bit more of an identity; so that it's rotation and abilities can fit the spec a little bit better.
It's not about difficulty, or about damage, or about complexity. The spec feels clunky.
Even spec is hardly a thing. The only talent that really makes things a bit harder is Way of the Mok'Nathal; and that is purely because it's priority is so high that you have to weave that into your Mongoose Fury windows as well. I'm not a huge fan of it myself, I think it feels more "Punishing if you don't" rather than "Rewarding if you do".
I don't completely dislike the spec though. I think the DoTs we have are quite good in flavor. I think the Mongoose Bite idea is pretty unique as well; I might have preferred an approach that felt less spammy, but it's not bad.