Just went ahead and did some sims to test Focusing shot + steady focus as BM, (was getting really sick of trying to maintain beast cleave and using kill command on cooldown with cobra shot on multitarget fights). Fortunately, it actually sims as a DPS INCREASE over using the currently suggested Blink Strikes + adaptation)
Now, I should clarify, it is only a DPS increase on your main (priority target) by about 2k, whilst it is a dps loss on multi target by about -2k on 3 targets, and a dps loss of about -4k on 5 targets. This should make sense, because you gain the ability to use Kill command on your priority target, but you lose the ability to do mass cleaving damage because your pet loses damage from no adaptation and no blink strikes (passive bonus to damage)
I think its important on mythic progression that we do higher dps on our priority target whilst cleaving (darmac, operator thogar, etc). Which means that the preferred spec should be FS + SF for progression cleave fights as BM.
Ofc for top parsing, going with Blink strike/adaptation will still be king
If anybody can tell me how to link the Sim Results (I saved it on my desktop as .html) lmk