The had articles on why the Warlock from WoW was never popular. The Warlock didn't excel at anything and was mediocre in all areas. They had a low margin so it scared casual players away from it. Also the Warlock doesn't feel more powerful at higher level compared to other classes. SE replicated the same problems with the Summoner. The Summoner should be a Pet Based Job to have an Iconic Image. WoW Warlock has different tiers of Pets they have Minion Pets, Combat Pets and Guardian Pets while the Summoner only has one type of Pet. The only issue with the Warlock was it was the most hated class.