I just want to point out people said rip rogue many times before, especially GVG where it turns out oil was a top tier deck for a while.
There was also a long time during classic and naxxramas where rogue only ran 1 blade flurry anyway (signaling perhaps rogue is less reliant on blade flurry than we think). I'm not saying it's not a huge hit to the class. And I'll miss blade flurry being awesome perhaps more than most here, but I don't think the class is dead. In fact, I think they got the most good new cards compared to any prior expansion in WOG. We'll see if rogue can pull something together.
The new identity seems to be providing more tools, so perhaps the board sweeps are less necessary if rogue can keep up in trading.
edit:
Also, I think that if the meta does slow down even a little bit (which I think is a granted) rogue gets stronger. If blade flurry didn't exist in this meta, my god... rogue would be worthless. So in wild, rogue is worthless (probably - who knows). But now with druid combo being gone (and some other burst combos like combo lock), and a lot of super efficient early game minions, perhaps rogue is a bit less reliant on heals. If rogue can fight well early game with the tools they are providing, then board clears and healing is less valuable anyway. And maybe just a 1 of blade flurry is enough. And if not, rogue has always been quite capable at seizing board control due to backstab, si7 agent, and cheap removal (and shadowstrike is amazing imo btw).
We're sorta back to a rogue that thrives on living on the edge of disaster. Using it's hp just enough as tempo to gain board tempo.