More than anything it's held back by it's ultra short development time. The engine isn't great, but they made it work for them fine, ignoring the crashes which could have been solved with more time, and are mostly solved with mods. The combat can only be so good with it, but that's not why NV is good anyway.
That as well. There's so much content they could've added to the game if given more time and less technical restrictions. That's why I want to proper remake. Not an exact remake, but one that also has the cut content (which will make the game different from the original, because Ulysses was supposed to be a companion not the culmination of the couriers journey).
Yeah, I'd love to see a re-imagining, especially since they know it'll make a ton of money, so they can invest in it. I assume, if it did happen, that they'd want to keep all events the same for lore reasons though, just to keep it from getting confusing. I believe Fallout: Brotherhood of Steel has been un-canonized though, so it wouldn't be a first for FO, and Bethesda does that all the time with TES, so whatever.
That's not fair. Interplay made a 3D (though still top down) "Fallout" with Fallout: Brotherhood of Steel before they sold it to Bethesda. It's also far worse than anything Bethesda has done or will do with the series. It's great how everyone just chooses to ignore that it exists.