I don't hate it but I don't love it either. I think the black dial is more striking IMO. For silver dial, I think that blue hands are better than gold - and for that matter, I think that the Dornblueth 99.2 is more attractive than IWC's version
Now a black dial with RG hands and markers would be something I could fall for - it's not the 3712 but it's getting close - and we both know how hard to find and desirable that RG 3712 is!
Dornblueths are for dorks . . . cut-off numerals, heart-shaped hands . . . blegh. I agree that the black dial is the most striking on the 5001, though. I probably won't swap. I'm just so surprised they came out with the new dial to begin with.
Well, if you are going to be a movement snob, at least consider a movement that is a little more inspiring. Here's one from across the border.
That IWC, while technically an in-house movement, lacks the quality of finish that you'd find in Dornblueth and Lang und Heyne. In my opinion, it makes the IWC movement rather boring and padestrian. However, given your biases towards the conservative, I can see why you find this appealing.
I have no doubt that DD and his team could come up with their own movement like a number of small AHCI operations - the difference in philosophy is enormous though. DD sells a few dozens of his watches a month for the price of a run of the mill ETA-based watch; doing the same thing with a manufacture movement would add a zero to the price list and that's a different approach - nothing wrong with it but small operations working off ETA bases have their place too. I'm very happy he focuses his time (and operating expenses) on great dial designs, beautiful movement decoration, useful movement modifications, nice case finishing and great customer service - all this for a watch I can afford IRL rather than on the pages of WatchTime or on purists posts.
What Lang und Heyne does to the Unitas is a great horological Ship of Theseus (a paradox of whether an object that has all of its component parts replaced remains fundamentally the same object).
In Mafoo's post, he views the Lang und Heyne Calibre 1 as a Unitas movement. However, as you said, Lang und Heyne actually refashions and/or remake almost all of the base components of the Unitas ebauche, including the screws. My view is that the Calibre 1 has so many of its components changed that its no longer a Unitas.
By this logic, JC Biver has argued that Hublot's 7750 base calibre is in-house (especially the magnesium alloy ones) as the majority of the 7750 ebauche has also been replaced.