...Switching to the DNG format as well, basically allowed me the same workflow as before with NEF and NX2
...NX-D will not even process your NX2 edits (at least not in the foreseeable future).
Like other NX2-users, I have tried to figure out which way to go. I have not yet concluded that Adobe is the signpost pointing to my track.
Non-destructive edits seem to be proprietary and essentially non-transferable between applications. The updated list of Nikon's answers at http://beta.nikonimglib.com/voice/index.html.en indicates that NX-D may eventually honor NX-2 edits, even control points. If and how control points can be turned into non-destructive edits in ND-X is unclear to me as control points will not be part of NX-D.
The non-destructive edits, or even (adjustment) layers, are indeed (always?) proprietary. So best choose software that has some future. We have been bitten by the end-of-support issue once now…
Even if NX-D is to “honour” your NX-2 edits “in the future”, don't count on being able to change them; that would mean rebuilding NX2 in NX-D and I don't think that is what they will (ever) do. No, what I think is what happens is that when you open an image in NX-D with NX2 edits, they will show you just the
results of those edits (I think just by using the embedded JPG, but that is speculation on my part).
There are quite a few capable NEF editors out there, but they do not fit my current workflow with Photo Mechanic as my back end application. I believe PM can be the front end to any image editor. My problem is to continue with PM as my back end application in a new NEF workflow (the back end is for all the things I do with image files after edit).
This is indeed exactly my need too!
One solution is to save edited files as jpeg companion files and do back end work with the companion jpeg files in the PM contact sheet. Knowing me, using manual "save as jpeg" means jpegs will be out of sync (sigh). I need automated save as jpeg after edit. The jpeg route will probably work with any NEF editor, including NX-D.
Yes, this route will work with any editor (they are all capable of saving a jpg version of the file), but would be VERY cumbersome. Definitely NOT the way I want to go.
The DNG track is tempting, but as far as I can tell, DNG support means very different things to different applications (or programmers). Many image editors can work with DNG input. Output to DNG and updating embedded metadata and previews seem to vary between applications. I hoped that Phase One's product Capture One Pro would be one alternative, but so far I find it less than promising with PM at the back end. Corel's Aftershot Pro, DdiSoftware's Qimage Ultimate and other NEF compatible editors, demonstrate limited or missing DNG support. To me it looks like the DNG route simply spells Adobe image editing products if I want to use PM at the back end.
Many raw editors these days do support DNG. But, as you said, perhaps not all will update the embedded preview (heck, even Lightroom you have to explicitly tell to do so).
For me the move to Adobe wasn't a big one, and in fact quite logical; I already used Photoshop for my non raw edits (and the raw edits of non-nikon files). While I really don't like the new subscription scheme, their software is still very good (the best?). The good thing is that CS6 is still available for sale at Adobe. And as Adobe has stated they will continue to update its ACR version for the latest cameras, you don't have to buy into the subscription model!
Anyway, hope you can find a good solution for your workflow!