Haven't seen a whole lot of play with this upgrade card, and I want it to find a home.
Initially, my thought was to put it on lower PS ships that are only throwing two attack anyway, so the odds of only one focus coming up is higher. But there are so many other good upgrade cards for those types of ships (PTL, DTF etc) that I just don't see this catching on.
Then I was thinking recon spec Mandalorians. But, I tried that to no great effect. You end up using them for defense because of when you shoot back at PS 5, and again, so many better upgrades to put in there instead (predator or VI)
Then I was reading about Aaron Bonar's Palob, and it gave me an idea. Might not be the most excellent build, but if you don't have points for opportunist its so crazy it just might work.
Consider this:
Palob, Calculation, Blaster turret, Recon Spec, Moldy Crow, EU (possibly).
Calculation doesn't state that you only have to use its ability once per turn (unless that's FAQed somewhere), so with a boatload of focus tokens you could change EVERY focus to a crit.
Anyway, it's not meta defining but could be fun in a game to roll 3 focuses and spend 3 to turn into 3 crits. Mostly just to see the look on your opponents face
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