Yeah, I think I'm going to kind of punt on this in one way or another -- maybe going back to 9.14.
I've screwed around trying to find another "external editor" that will work like PageEdit, play well with Sigil, but with more functionality. Amusingly, the closest I've come is Kompozer. I mean, Kompozer actually works in this role, except ...
It hasn't been in development for several years now and it has an incompatibility in handling XML/HTML/XHTML syntax with Sigil. So when it opens my Sigil HTML files, it throws away the XML prolog (thanks a lot) and happily replaces terminiating occurences of '/>' with '>' (i.e., it eliminates self-closing tags, but but doesn't replace them with acceptable syntax). Saving this back to Sigil results in the Sigil Preview window announcing that an intolerable syntactic sin has been committed ("Opening and ending tag mismatch", duh).
This is correctable by telling Sigil to "mend" the HTML files, and then it's happy.
But it's not clear to me that this is actually a better approach than either temporarily going back to 9.14 or using some other approach where I copy/paste from a formatting "composing" editor into Sigil. I'm going to arbitrarily pick one of these approaches since I've already spent too much time being a bit stubborn about what's really a fairly trivial problem.
