!?
*I will have to think about it a bit... No slight intended, but that caught me off guard, and I'm generally not surprised by anything.
This is irrelevant. Anyone may interpret the same thing differently, but this is not the same thing for everyone to interpret. Ask yourself what's missing from Fallout in Fallout 2; then ask what's missing in FO3.
Clearly Bethesda has their own interpreted priorities of the series... For instance their confession about the series' writing, and that not being a battle they wanted to pick... That's strike one. Then there is that the game forgets almost any offense in a number of hours; but the series always held the player to their actions... that's strike two. And then there was the complete abandonment of the Iso-perspective; http://i271.photobucket.com/albums/jj125/Gizmojunk/yep_zps1417cd1d.jpg... strike 3, and there's plenty more. They wanted to make a simulator; they didn't care what the series was about. They clearly wanted 'rule of cool', and graphics drool.
FO3 is a great experience on its own, but it doesn't deliver on the Fallout experience; it only delivers the Fallout names ~draqed on the same game Bethesda has been refining for twenty years. A game that's like no other, and yet very like 'RPG-antimatter' [IMO]. The franchise is dead in FO3... Bringing back Isometric & turn based combat wouldn't help that.
Yes.... They got everything right that they copied directly; then they embellished it. It does seem like Fallout was the last of the special sauce, doesn't it; to be liberally applied. (Bottle-caps/FEV/Enclave... and such. )
Ask yourself this... Would ANYONE in the Brotherhood of Steel, passively live in filth and debris for years ~(for days)? Like they do in the Citadel?** You don't think Lyons or other would have assigned tooth-brushes to all the initiates ~(to scrub the tile grout with)? They did a fine job on the lore yes indeedy. Nothing pre-established in the Fallout series is even close, and yet it's presented as the originals. New stuff is fine, but the old stuff is new stuff too ~in every respect. Why even bother with the name but for marketing draw... for a product that isn't what the name meant to anyone at the time.
So yes.. while it should be iso-3D, it cannot be, for the very reason it should have been in FO3.
** This is your answer gcubed. FO3 is meant as a digital resort; a theme park for customers looking for digital cosplay; and as such, its priorities are the world sim ~over everything else, because that's the point of it. Like I said before, discarded the strengths of the games, and glorified PA appearance of it all (for sake of the tour)... Even when it wouldn't make sense.