Shadowlands Brewmaster Monk changes dilute class fantasy and flavor.
For the last two expansions, (legion being an expansion dedicated to reinforce class fantasy) the BRM has played relatively the same way. Keg smash, blackout strike, Ironskin brew is used to get you drunk causing you to shuffle unpredictably, increasing your dodge, and numbing your senses so you don't feel the full effects of strikes that connect until later when your buzz wears off. Purifying brew is a hangover remedy, making the pain from the damage taken in your drunken stupor go away so you can keep fighting and drinking.
Shadowlands is removing ironskin brew. Replacing it with an absorb in the form of celestial brew (but not used in the same way as ironskin brew). Not getting drunk anymore. Drinking spiritual magic potions. If I'm not getting drunk, why am I staggering? My shuffle is provided by things I do to the enemy. Are they drunk? Why do I drink a hangover remedy if not to clear the effects of my alcohol?
I'm concerned that Monk is going to feel pretty much like a warrior (when I could just play my warrior) which is a shame because it felt very distinctive.