Hi, Zelda, and thank you!
For now, I only have two suggestions:
1. As someone in another thread proposed, a find/replace.
2. I would like it to go to the last directory I used instead of the Sigil program directory.
I was hoping that one could build an adequate EPUB file from scratch using Sigil, but I'm not sure that's what you're aiming for. If I'm wrong, please let me know.
For now, I think the best bet is creating the file in
Atlantis, (which does not allow for the level of format editing I want), then editing with Sigil, which is a good work process for me.
I never EVER liked Book Designer from the first moment I opened it, so I'm glad to see others willing to migrate to Sigil, even in alpha testing.