There have been no Voidwatch rewards that cater to Summoner strengths; not a single reward offers increases to avatar damage, or a reduction in MP cost, or a reduction in Blood Pact timers. Is this intentional or an oversight? SMN hasn't had a new piece of "must have" equipment in more than a year now.
Haven't you heard? The only armors added for SMN, are artifact, relic, empyrean. You need to wait on if they add full level 99 sets in some future activity to get anything for SMN. More likely you'll just get empyrean +3 though.

3 armor sets are more than Summoners deserve! /Sarcasm