I’m thinking particularly of Return to Kharazan, but even for other mythics the WCL tools would be useful for analysing performance in lower-risk environments. I think the value for beginners would be immense, especially for healers and tanks who aren’t able to viably sim their performance.
If not, could I ask why? I did a quick search, but nothing popped up. Might hark back to Draenor, I suppose