To avoid the two-step posting process of typing a page name, hitting "Edit", entering content, and hitting "Save Page", how about optionally including a post content field, save button, and preview button directly on the page with the inline? This would particularly help when using an inline directive for a comment form at the bottom of a blog post; with these added fields, the post form becomes exactly like the typical blog comment form.
I agree that having this as an option is reasonable. Although it would take a fair amount of work. --Joey