So, I voted "Don't Care." If Bethesda wanted to do this, then I wouldn't stop them. But I probably wouldn't play with it, and I also think it would be an enormous venture on their part.
For starters, as a gamer that primarily plays turn-based games it's been a pretty good development cycle for me. On the rare occasion when I'm not playing Fallout 4, I've still got Dead State, Massive Chalice, Wasteland 2, Blood Bowl 2, and X-Com 2 on the horizon (that's a lot of "2s" come to think of it.) And that's just off the top of my head. It's been a long time coming, but I've got more turn-based games on my backlog than I have free time to play them. I've got plenty of other games that are scratching that itch for me, basically. What I like about Bethesda's games are their impressive vistas and level design, which are meant to be experienced in a different manner.
And as has been said, there are numerous hurdles to overcome with something like this and actually making it a view mode you'd be able to play the game in.
To start with, the controls aren't set up for this. Moving around with an anolog stick or keyboard I could see, sure. But Fallout 4 implements real-time combat - you would need very precise movement controls to get your character even aiming at the enemies. The other issue is that you can't aim from a top-down view like the game originally intended. How would I target specific body parts in real-time from this view? I can't use my mouse or right stick to aim the camera after all. Possibly you could link your aiming to those functions, but it would still be imprecise.
Even using VATS for combat, you'd have to completely rework the UI and how you navigate. (If I'm looking down on all my enemies, then all their body parts and the selection of them would just stack on top of each other.)
Getting this camera to work in inside locations would mean reworking all of the occlusion settings for all the objects (so that you could see through the ceilings of buildings and likely even a lot of walls.) And remember that many areas are multi-leveled, which only complicates things. And looting and scavenging becomes a nightmare. Just zooming in really close so you can actually see those pencils on the table doesn't come close to solving this issue. What happens when I come across a shelf? Or that safe hidden under the bed? Also, how you position the on-screen cursor would need to be redesigned, so that you could still precisely target all these different items.
And the level designs have not been set up for this view, either. Top-down cameras don't do multi-leveled areas all that well. I would not want to try to navigate a spiral staircase or fire escape in that view, while controlling my character using controls meant for a totally different view.
And even when outside, exploration becomes problematic. Again with the level design - Bethesda's games are designed for you to be seeing them from a certain angle. I'm surely not the only one who will scan the horizon and pick out potentially interesting places - you would miss those in a top-down view or hope to just stumble across them. (Like waling around at night and seeing a light glowing off to one side of the path that leads you to investigate it. You just don't see that if you're in a top-down view.)
Those are just issues off the top of my head. By the time you would "patch" in something like this, you've essentially designed an entirely different game.
That said, this is exactly why I like that Bethesda supports modding. Because it sounds like a great idea for someone to further extend with modding (and of course the idea itself comes from a modder.) Maybe he'll continue working on and tweaking this, and I'd be interested in seeing if it goes any further than that. I think it's a neat idea, but I'm not going to be bothered if Bethesda doesn't take time to patch this or anything.