This isn't much of a post outside of me sharing my personal opinions which likely won't align with the diehard Rogues out there.
I haven't played Rogue steadily (outside of getting it to max level and letting it sit until the next xpac) since Cataclysm. I main'ed a Rogue in the first couple of raids in Cata and had a blast doing it. Where that feeling changed, I honestly don't know. But a couple of weeks ago I got my beta invitation so I wanted to try out several classes to see how they "feel" and how I perceive them during my gameplay through questing and Torghast.
Primarily I've been playing Subtlety and so far I'm really enjoying it. After tinkering with it on the beta I decided I might actually try my "live" Rogue out and see how it performs. Man is it night-and-day. Shadowlands feels a lot more fun and engaging (especially if you choose Maldraxxus as your covenant) and seems to perform pretty well. Mostly I've been rotating between the Rogue and my Death Knight on the beta. Being such a prominent "Death" expansion I really feel like I need to play my DK, but after several years of playing it exclusively with a Druid, I feel like I need to try something different.
I guess the main reason I'm posting this is I'm curious what other beta testers felt about Subtlety, Rogue, and they're "performance" in Torghast. I've cleared everything I've set forth to clear in Torghast and The Maw decently easy with the Rogue, outside of some squishiness, I haven't encountered many problems. Does it feel squishy to others, too? Granted, I'm using a premade character template, so I'm not actually using my own "live" Rogue copied over.
My only real complaint so far is that it feels like most fights I have to pop just about every defensive I have to not die. And sometimes I still end up getting wrecked. Am I doing something wrong? Being so rusty at the class, I can't imagine I'm playing it optimally.
I definitely see a lot of area for improvement to Rogues - notably some of their covenant abilities and talents, but overall it seems enjoyable and even though Torghast has mostly "NYI" bonuses, it too still seem enjoyable.