The film’s world-building works best in small doses. A meeting in the middle of the desert is a total dead end, whereas all sorts of fun details can be inferred from Stahelski’s frequent cutaways to the High Table nerve center, where dozens of tattooed and lip-glossed workers monitor Wick’s bounty with an old-fashioned switchboard (imagine a SuicideGirls reboot of “Mad Men” and you’ll have the right idea). Non-binary “Billions” star Asia Kate Dillon plays a stiff and slinky High Table adjudicator who’s covered in Thierry Mugler coture; part referee and part femme fatale, their performance speaks to an underworld that’s sustained by a mutual respect for all people so long as they don’t shoot the wrong target.