Captions
Would be great if the Caption style files from the new captioning workflow could be added to the library so that we can easily re-use them in future projects, like we can with motion graphics and color swatches.

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Paul commented
Thirded. would be nice if they would allow it such that if it's any Adobe .* type, it can be allowed. I think a subtitle or caption preset is exactly something I should be able to -> go to Library -> "pick up of shelf" -> use. But not subtitles? What gives? They're nigh byte-size files, and without the Library inclusion functionality, it's yet another Adobe doodad I have to track outside of Adobe, because Adobe doesn't particularly see fit to take care of their own file types as first-class citizens.