Just some notes about the cactus summon's taunting effectiveness, but it seemed to worsen noticeably beyond level ~40. Perhaps too large of a skill pool (as it levels up) results in less effective skill usage overall. It may lose more taunting effectiveness for each new skill gained past level 5.
Perhaps a way to toggle/disable skills we don't want summons to use could help with this. Maybe even allow the summon's skills to be added to the summoner's skillbar to give the summoner more control over when/what summon skills are used.
I just recall that while leveling a summoner, taunting started out great, but became quite poor by level 50.