Larger diameter perlite such as Mother Earth #3 or # 4 if that's your aim.
Bark under the soil when wet stay wets for a while where as perlite would shed the water faster
as when i root prune and notice damp mix in container the bark i can tell is damp/wet where as the perlite no.
No longer adding anything to the promix as in past.
Pro mix works fine in our containers figs do well as seen in pictures posted during season.
In other words nothing fancy is used in yard i don't knock the folks using seaweed , bat guano, rabbit poop , sip pots , cloth pots ,
those fancy pots that supposed to self root prune etc etc that's their business and their money . ; )