Personally I feel they should invest some time in reworking Summoner. I suggest a mini LB-like bar that fills with DoT crits and allows the summoning of a primal for one big attack upon use. Maybe place the summon attacks in the pet hotbar to not muddle up your current bars. They could simply set the summon moves to be the Primal's big move as always (ex: Diamon Dust Storm for Shiva)