DoTs were never within the flavor of a summoner anyway. I don't know why anyone would complain about them being retired.
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As SMN was and is (but thankfully won't be) it's basically a budget Warlock from WoW. I don't know how anyone could complain about the lack of DoTs either. Seriously. In Endwalker it will actually be what a SMN should be. What has existed for years has been SMN in name only.
Identity and personal job action customization. Couldn't care less for balancing.
But also having jobs that are coherent with the given lore and well built into the world. Less is more. Maybe add some new advanced jobs with prerequisites that lock said jobs otherwise.