Summoner's version of pets are archaic, clunky and a poor fit for the game's framework.
The umbilical to SCH is at the core of many of the issues players are experiencing with SMN and that have been plaguing it since the job's inception.
The dev team has addressed that they are unhappy with how ACN works.
If BRD can undergo such large changes and a rework to their core gameplay, there's absolutely no reason that SMN cannot also receive the same treatment. Remove the job's attachment to ACN and correct the underlying issues with its core gameplay.