Several amazing mods came out since then.
> Project Nevada
Improves shooting mechanics and makes the hardcore experience much more customizable, plus improves the action point system and shooting mechanics by adding a dedicated grenade/throwing hotkey.
> Beyond Boulder Dome
Restored an interesting story originally planned for Van Buren, Obsidian DLC tier good acting/writing.
> A World Of Pain
114 new locations and a fucking gigantic late-game dungeon
> XFOs Mods
I personally just use the AI and NPC healing ones, but theres a ton of other cool stuff
http://xfo-nv.com/
> New Vegas Uncut
Restores almost all cut content to New Vegas.
Also get
> The Strip Open
Removes all the doors
> Freeside Open
See above
> Repopulated Wasteland
Self explainatory.