It's a neat idea, and it looks spiffy.
One thing we'll need to consider when building it is the burden of
potentially maintaining two separate codesets for editing posts - one
on the post page itself, and one on the Manage page.
Does the utility provided by the feature outweigh that burden,
especially if the editor isn't as functional as the full editor?
There may be other potential issues with allowing decentralized
editing in regard to plugins. For example, a plugin that adds an
extra field to the post entry page might hiccup when its data isn't
present because the field was not inserted into this other, minimal
editor.
Perhaps we can come up with a way to share code between these pages,
which would be ideal. Also to note is that inline editing like this
would require Ajax to function correctly, and users who have Ajax
disabled (by disabling javascript or whatever) will be forced into the
old method of editing anyway.
Just preliminary thoughts. I'd like to hear potential solutions for
these snags, because it's a darn cool feature.
Owen