In regards to the changes to getting health or Stam/Mag when a pet is summoned via the change to Expert Summoner
This change does not just take effect if a pet is summoned via the Sorc Skills, but Engine Guardian, Maw of the Inferno, and other like sets that "summon" are causing sorcs to go back and forth with the passive from Health or max Mag/Stam.
IMO: this passive needs to be reworked to only be affected by pets summoned by the Non-ultimate Daedric Summoning skills: Summon Unstable Familiar and Summon Winged Twilight.
Sets not not factor into this equation since they generally do not provide 100% uptime for people to effectively build around with the changes to Expert Summoner