Last night, I was GMing a game of Fate Accelerated Edition with my friends, and their characters were up against a gang of mooks: the mooks had only 2 stress boxes each and could not take consequences.
At some point, one of them made a clever attack on one mook. They rolled +1, with a +3 approach and a +2 stunt. And to top it all off: the best the mook could manage was a -2 for defence. Adding that up: they just made a legendary (+8) success.
The mook was taken out with quite some drama, and the player took a boost to make another mook distraught. But this was a legendary attack with an entire five shifts available, only one of which was spent on a boost, and it feels like we did not do such an amazing success justice. If it had been against a regular character, they would've almost entirely been taken out on the spot, and that would be impressive - but this was just a mook.
What can I do to do this attack justice? Specifically, what is the scope of an appropriate response, if any, for these five leftover shifts in this context?
I considered afterwards: I could have allocated the remaining shifts to a second mook, or allowed the remaining shifts to be used in a free create advantage action, or paused and talked to my players to see if this attack should have had a narrative ripple effect on the entire scene. I am not sure if these are appropriately sized responses though, or which are most in the spirit of Fate Accelerated, so some input on these would be appreciated.