Well, for my friend who can hardly move around Skyrim correctly, I say yes. It's inconsiderate to dislike a completely optional feature that would allow playing a game possible (or at least easier) just because it "wouldn't fit in." I agree that features from different games by the same company should generally stay segregated but in this case I would be fine with it.
I would love full turn based combat in TES; but I fully expected it in Fallout 3 ~I thought it was very inconsiderate that it wasn't.
IMO a game can be ruined (or at least become badly convoluted) by too many ''optional" options.
IMO "just because it 'wouldn't fit in.'", is
always sufficient reason to leave something out.
** But optional DLC is always cool; and I wouldn't mind even VATS in TES if it was an optional DLC that they did not have to test and patch for the entire player base across three platforms to include.
*** If they had offered a 'Classic Fallout Combat' DLC, I'd have bought it then ~or even still buy it today.