This has been talked about since the tree came out. I have strongly voiced an opinion of the following three core enhancement abilities:
Tier III
Fortify Summons: Your summoned creatures, hirelings, and pets get 25%/50%/100% fortification, +5/+10/+20 PRR, and +5/+10/+20 MRR.
Tier IV
Imbue Summons: Your summoned creatures/hirelings/pets gain +10/+20/+30 Melee, Ranged, and Universal Spell Power.
Tier V
Displace Summons: Your summoned creatures/hirelings/pets gain a permanent 25% Concealment, as per the item effect "Lesser Displacement", and 10% Dodge.
Warlock I have spoken to on Sarlona do not bother with these. I for one, feel this is untapped real-estate for melee enhancements to bolster the melee warlock build.
Since these begin at tier III - an off class build has to devote 10pts minimal before paying the 1pt AP for the first rank. To have them all, that is a 31pt investment. This seems unrealistic and undoable for any off class build. Warlocks are not going to spend 7pts. to help hirelings or summoned creatures, it is counterintuitive.
Please consider taking the same zeal to change this as you did in the previous warlock "hotfix".
-Pnumbra