1) Do you guys like the fact they removed most of the unique crafted weapons?
I didn't mind most of the crafted weapons missing, because I never used most of the crafted weapons. The only one I miss is the sishkebab. The rest simply aren't that interesting. Particularly in a context where other guns are available.
2) In Fallout 3, they didn't have 5% of the invisible walls like in FNV. Do you like invisible walls?
In Fallout 3, the walls were generally huge piles of rubble that
should be easily climbable, but weren't for some reason. Or still-standing buildings that you miraculously can't pass through to get to the other side.
3) Do you like the lack of underground exploring?
...There is underground exploring. There's a huge drainage system underneath Vegas that I got lost in several times. Also, large numbers of mines and caves, which count as underground. And on top of that, frankly, the underground exploring in Fallout 3 was one of the weakest parts of the game, since there was almost nothing of interest down there and it was all the same.
4) Do you think having all of the buildings out in the waist land locked? Ok lets say 80% of them?
Which is no different from Fallout 3. The Wasteland Interior mod in Fo3 came about precisely because 99% of all structures in FO3 were boarded up set pieces.
6) Would it be a good idea to use a stove or BBQ as well as a camp fire with no flames?
Yeah, it would. Just like it'd be good to get the bottle back from drinking a nuka cola, and just like how you should be able to refill bottles from water sources. In both games. Mind, those stoves are all gas (pilot light, yo?) and I very highly doubt there's any natural gas around to actually ignite, given how the leadup to the great war had most resources like that being depleted.
7) As for a Marked location, should it have more than a dead [censored] brahman?
Considering that the marked locations with dead brahmin are quest-relevant (in particular, Cass' quest), I don't think it should.
8) The armor variants from Fallout were awsome. So its a bad idea to have a bunch more armor styles?
Uh, whut? New Vegas
has more armor styles. It has all the merc and raider gear, plus more combat armor, plus more clothes, plus the whole NCR/Legion series, plus the powder ganger gear... The only thing it's missing are some varieties of power armor. Except Enclave PA is replaced by Remnants PA, which means the only variation on PA you're missing is Outcast PA, which wouldn't really fit the context.
10) Since when is it not a major aspect of the Fallout series to have a large exploration facet?
Since every game that isn't Fallout 3.
11) Again when is it not a major part to find buildings/vaults and dungeons a major part of this type of RPG?
Again, since every game that isn't Fallout 3. In fact, I can't think of a single "dungeon" location anywhere in FO1 or 2 that wasn't relevant to a quest and didn't have its own self-consistent reason for existing.
But yeah.. on an ending note, it is a fact, this will not compare in replay status compared to FO3. Send me a note and I will make a small side bet with ya if you would like.
I don't see how this statement is accurate, considering how there's five ending paths to Fallout 3's one and a half.