Text in Dimensions should be able to match free-standing Text.
It was nice that Superscript and Subscript Text in Revit was implemented in Revit 2017, but when I mentioned that in the office (now that all of the Revit versions we use support it), we started talking about updating our Typical Details Library to use the feature (instead of multiple floating text elements that can get lost or left behind, or hidden if text is changed to opaque instead of transparent).
However, I'm realizing now that we still need separate text elements for Dimensions. We need at least these two text styles (even if it's just through a clunky right-click) in the various Dimension text overrides. The current situation is better than before (at least all the text is together), but it would be nice if we didn't need a separate Dimension (with an invisible character).
I also re-posted Subscript & Superscript for Labels (Tags) and Properties for completeness.