The last patch before awakening was the last time Summoners were a great class. Then 1-2 months after awakening, they started nerfing Wynns by reducing the # of summons and barely increasing the strength of the summons. Then a few years ago they nerfed the summons even more and turned them into a purely DoT class with a pet for transfer pain. Wynns haven't been summoners in a long time, and it doesn't look like that's planned to change anytime soon.
Summoners (with summons doing the actual damage and the summoner buffing/healing) and Dominators (high mp cost steal essence, seals to debuff/kill in PBAoE, and soul guard / soul cry to go toe to toe with any opponent, but requiring long mp regen time between bursts) are two play styles that have been completely removed from this game.