My comments.
People will kill you if you don't include the "Chinese jet pilot" line. It's a good one.
The S-Mart ending is better than the apocalyptic ending, so that's the one you're actually gonna append to your cut, but it's easy to use both via seamless branching.
For the best in picture quality, you really need to use the M2V video DIRECTLY from the DVD (apart from the couple of extra scenes you're adding, of course). You can plunk your M2V video directly from the MGM DVD into your DVD creation program for 90% of the film, then for your added scenes, create your own files just covering those segments.
If your material goes through your editing program, there will be a slight drop in picture quality which you can avoid by doing it this way.
There's an added bonus which is that this method makes it easier to include the original ending via seamless branching.
Now - there's a couple of sequences that would have been in my cut, which aren't surfacing in yours. Consider using the following:
Portions of the darker alternate opening ... I really like the alternate line delivery of "It got into my hand and it went bad ... SO I LOPPED IT OFF AT THE WRIST!" (use video from the theatrical cut over audio from the extended opening) ... Then we see Bruce shouting an incantation (deleted scene only) and cut to even more Evil Dead 2 footage.
Since this is only a couple of shots (Bruce chanting, and I think there's another one of Bruce putting a cross over Linda's grave - I'd have to check my ancient edit), and they're dark and weird anyway, the drop in picture quality is not really noticeable, especially with color correcting.
Now get out your Evil Dead 2 DVD. There's an extra closeup of Bruce screaming in the vortex as electricity of many colors swirls all around him. It fits perfectly into an Army of Darkness cut.
Just short extra bits but you'd be amazed at what a statement it makes for people familiar with the film as is.
Okay, now Henry the Red. The quality of this scene is shit, but if you cut out the splice marks on every cut, and color correct the hell out of it, it's a fun thing to include.
If it doesn't work for you, you can include it as a deleted scene, but it would be nice to see.
Also, I think you're darkening the windmill footage a bit too much.
Another option for removing the sci-fi logo when you REALLY need to is to take the inferior quality Anchor Bay cuts and paste just that portion of the image over the sci-fi version, removing the logo. Color correct til you can't notice it.
Looking forward to this!