As much as I personally don't like DoT classes, I think the change to SMN actually helps the DoT class concept. It could allow for a proper DoT Mage class in the future that isn't explicitly tied to being a half baked Summoner. With the old SMN, Summoner fans weren't really happy and DoT Mage fans didn't seem completely happy either as the class wavered between how much and how little it actually focused on DoTs VS Pets VS Summons. Now if we get a new DoT Mage (Time Mage maybe?) it could be a real DoT Mage.

Although, as for the original question of the thread, I've always been interested in alternate versions of classes. I know SE finds it a massive pain to work with on the backend, but I would want to see more SCH/SMN stuff instead of less. Of course, for me that comes in the form of a proper DPS bow user to oppose the support DPS of Bard.