An interesting workaround, and like many workarounds, it has its good and its bad points.
- The Good.
- No AutoSave to slow you down.
- No more tiny Post Editor window to deal with.
- Composure of posts in the full featured text editor of your choice.
- The Bad.
If you're going to create a number of posts, the Edit Posts menu will let you apply labels, to existing posts, without using the Post Editor. If multiple posts have the same label applicable, you can add a label to multiple posts simultaneously. You'll only have to type each label once. That should save a small amount of time.
But you will have to use the Blogger interface, in some way, to add labels. You can't avoid use of both the Edit Posts menu, and the Post Editor, completely.