The only thing I have in my "someday" list of tasks for Glancer is the possibility of adding/using the whisper binary to get captions when/if unavailable. Aside from that I just keep it more or less working by using it myself (and to be fair on this one, I wish I wrote it in another language, Haskell can be a bit finicky to build if you do it sparingly).

Any addition that is on the "view" layer (the generated HTML) is very easy to add, just needs to go into the template file, at some point I might tweak that area but currently have no outstanding idea/requirement. The rest (i.e. the bulk of the code) is just a very bare-bones parser for captions that should be pretty stable and need no additions (crossing fingers here).