The poor character customisation is the same.
The graphics are the same.
I'm assuming you're talking about customization of your character's appearance. Yeah, it's the same. This was expected since it's the same game engine as FO3. A quick google search would have told you this before you bought the game. Engines get re-used a lot. This isn't a new thing. When a new game in a series comes out within a couple years of the previous one it's pretty likely they're using the same engine.
The same guy doing practically all the voice acting is the same.
Not true. Way more variation and higher quality in the voice acting. Whether or not it meets your standards is going to be opinion.
The annoying glitches like getting stuck behind doors and mobs getting so close you can't hit them are the same.
The blood boiling navigation of the Pip Boy is the same.
The frustrating map where you have to remember where locations are to find it again them amongst all the other locations is the same.
Same engine.
Then they added the pointless crafting, pointless gambling and pointless card collecting and the pointless companions...
Opinion, though I agree that it should be easier to do.
...oh and lets not forget the factions to add some variety and freedom of choice. Or not. They all give the same bloody quests! I don't want to kill x, so i'll go with that other faction. Oh - they want me to kill x too?! Are you for real? I'll try this faction instead... oh wow, x is really unpopular...
Um...if someone is an obstacle to both factions they will probably both want them out of the way, no?
...and then they took away any motivation for proceeding in the game.
FO3 - Your father does a runner with a big secret and you want to find him. Ok, there i see the motivation.
NewVegas - Someone tries to kill you and fails and runs off with someone elses item. And...? He failed, so what? Who cares. He got what he wanted, end of. It doesn't make sense for them to be tracked down. Maybe if they killed a loved one, but they didn't. No motivation at all.
Disagree. I didn't like being forced to care about why dad left. Makes more sense to me to find out why someone wanted you dead...if for no other reason, they might still want you dead. I was personally annoyed less by NV's motivators, but that's just me.
I also think, my opinion of course, that people prefer black and white, good vs evil, when playing games like this... you don't ever get the satisfaction of thinking "I did the right thing!" Instead we are left with.. I suppose it could be worse.. really?? Who wants that in a game? This is why we play games to either be the evil super villan or the heroic knight in shining armor..
I don't know whether or not people prefer it, but I'm sure that most people are accustomed to it. I think it's a pleasant change to make the player actually think about what the factions represent rather than railroad them down some kind of dogmatic moral stereotype, but I'm sure some people simply prefer to be told who the "good guys" are. After all, that's what most of our governments and religions have been doing for centuries so people are used to it.
One thing i can actually dislike would be the factions. Because, in Fallout 3, there's no sides. It's just you, your story, your background, your guns and ammo. While in New Vegas, you gotta choose a side, it's nearly impossible completing the main quest without choosing a faction.
I think it's more accurate to say that FO3 chooses your "side" for you rather than giving you a choice. You had to back the BoS/Dad, restore the purifier, and fight the Enclave regardless of what you wanted to do.
New Vegas does get boring faster than Fallout 3 did.
I feel the opposite. I got bored with FO3 very quickly outside of the main quest.