Based on what? The Legion prepatch that was 6 (7?) weeks long?
In other news:
I wonder if Grant Kirkhope is still involved in Dragonflight. His pieces in Shadowlands were some of the best in the expansions (Torghast, Maw Track, Revendreth Track, helped with Nathria) and while I initially expected them to suffer from the One-Trick Pony syndrome that all his other tracks suffer from, they are actually quite diverse and distinctive (even though the Torghast songs are dreading dangerously close to Gruntildas Lair).
He might've been busy with Mario + Rabbids, but it would be a shame.