NOTE: I got scooped by the blue post while writing this. I’m going to post it because I finished it before I saw the post, but this is for the original version of the tier set as of PTR launch.
I’m gonna take a second to go through the Brewmaster 4pc set bonus. The 2pc is mostly fine, if uninteresting, but the 4pc is seriously lacking.
Before I do that: I think there is a grain of potential in making a “Breath of Fire Combo” set bonus (similar to Blackout Combo), but there is no tuning knob that makes the Shuffle extension good. That leaves the Brew CDR, which does have a tuning level that it would be good—but it is one that is high enough that I don’t think it’ll be good for the spec.
Let’s start with a baseline. If you take the Light Brewing talent (which is pretty standard—talent isn’t super powerful or interesting but it is better than the others on its row) and play a normal rotation (i.e. not ignoring TP), you get an extra Purifying Brew every 44 seconds and an extra Celestial Brew every 158 seconds.
We can calculate the amount of value that you’ll get from the 4pc in different combinations without too much difficulty.
Let’s start with the basic case: Kyrian Brewmaster using a regular legendary (Stormstout’s Last Keg, Charred Passions, or Mighty Pour): you’re going to get an extra Purifying Brew once every 209 seconds (3m 29s) and an extra Celestial Brew every 720 seconds (12 minutes). This is 4.5 times worse than simply taking Light Brewing.
In fact, the latter number is so bad that there are 0 fights in Sanctum of Domination or Castle Nathria where you would gain a single Celestial Brew cast (because every fight over 12 minutes long also has enough downtime that your “time spent pushing buttons” is < 12 minutes).
(If anyone opens the sheet, they’ll notice a field for “Tiger Palms per Keg Smash”. Changing this only changes the values by a few seconds, so the results are very similar whether you use SCK for AoE and/or CDR via Walk with the Ox).
We can repeat this calculation for Necrolord, which benefits due to increased CDR on TP during Bonedust Brew. Down to 9 minutes. 1 whole extra CB on Sylvanas. Maybe 1 on Denathrius at the very end of the fight.
But what if we use the Shaohao’s Might legendary to fish for extra CDR on Tiger Palm casts? 1 CB every 5 minutes and 38 seconds. This legendary is very bad for Brewmaster damage and loses you the defensive benefits of whatever other legendary you’re currently using, so you’re giving up a lot to get 1/2 of a “Light Brewing”.
But wait, what if we use Spitfire to fish for extra Breath of Fire casts and eschew SCK entirely in favor of TP spam? That brings it down to an extra Celestial Brew every 3 minutes and 52 seconds—except that that this also loses you the benefit from Light Brewing, so it is actually a net loss of Celestial Brew casts.
||Time per additional...
|4pc (standard - Kyrian)
|4pc (standard - Necro)
|4pc (Shaohao - Necro)
|4pc (Shaohao & Spitfire - Necro)
So in practice this set bonus would need a 3-4x increase in power to the Brew CDR effect in order to be interesting.
I don’t think that printing “…decreases the cooldown of your brews by an additional 3 seconds” is going to do anything but highlight how bad the CDR on Tiger Palm currently is, so I would strongly suggest replacing that effect entirely.
Again: having a “BoF Combo” set bonus could be fun, but the effects tied to it have to be interesting and sufficiently powerful. The ones currently on there are not.
Personally, I am kind-of a fan of the suggestion that Abhmonk made farther up: building off the forced-dodge gameplay that we had in Legion (via high raw mastery) and BFA (via Training of Niuzao). That is a fun minigame that we don’t get a lot of right now, in part because of how mediocre Mastery rating is in raid and how you don’t get much opportunity to force dodge with 50 things hitting you in Mythic+.
Alternately, a set bonus that removed Celestial Brew from the GCD and gave it a second charge would also be pretty great