You know, I'll say why I liked the repair mechanic, the weight limit, and that ammo had weight in hardcore mode in New Vegas. Because it forced you to prepare. You couldn't carry everything you needed to so you had to figure out what was the best load to mostly cover what you needed (extra of the same gun when yours needed repairs or at least a weapon repair kit or two). And it meant you might find you ran out and need to get creative (ammo weight did that to me in Vegas in my last playthrough as I ran out of ammo and had to get through the Deathclaw area. I could go back and go around but I didn't want to go all that way around so I had to get creative in how I took down the deathclaws and limited use of what little ammo I had left. It was a relief to see Legion after that to deliver me a little extra ammo just to get me to town).
For me, part of the fun of an RPG is to prep and decide what to carry was part of the game and part of what we enjoyed out of the game. I don't want it to be just as easy as to just go out and shoot everything. I want to have to worry about tactics and preperation. Shooting is only part of the game (if it was all of the game I'd play an FPS but FPS's bore me after a while honestly... I want more in my game than just focus on combat). Prepping and figuring out the best tactics is a big part of an RPG to me. And forcing me to have to carry stuff for eventualities when I have limited weight/space creates more complication and I want that complication.
I guess an easier comparison is telling me they got rid of weapon damage is like saying they got rid of limited ammo. It's the same thing to me, you just made the game simpler and I didn't have to worry about what I'm prepping when I go out in the wasteland. I like prepping and figuring out what I need to carry and what I need to sacrifice or can try to do without. And having to make sure I am conservative in what I use cause I'm limited. And it's not as simple as saying, oh, well you still have to worry about ammo. It's less things I have to balance out when I'm prepping my backpack. I like the complication and the forcing me to have to choose between different stuff.
This so much. This is part of the reason why Fallout 3 and NV is fun to play for me. I can't just go wander about without thinking of my weapon status and how much i'm carrying. I have to plan things. But i guess the wider audience won't like like this kind of play style.
Bethesda keeps making their games simpler everytime.