I'm mostly just disappointed that, because of the UA's timeframe, WotC taking a shot with these subclasses and whiffing means that there's no opportunity to whip up Ravnica-style subclasses (traditional single-class subclasses that line up with the flavor of specific factions but still work fine outside of the context of that setting and faction) to fill in missing archetypes or flavor-gaps in the various colleges.
(Suitably flashy spells being added to the Bard list - whether through new spells or, like Tasha's, through expanding access to existing options - should mostly suffice for Prismari and Silverquill, but there still isn't a particularly fitting Quandrix Druid subclass, and the Witherbloom subclass getting dropped rather than focused into either Wizard or Druid means that there still isn't a clean "come here for all your Witchy needs" option in 5E, which is, y'know, a bit of an issue for the Witch college.)
Ah well. At least the "what existing classes/subclasses make good fits for each college?" list I'd started working on before the UA might have some use again.
