If they released another expansion for fallout3 this is what you would get, only a few tweaks have been made.
Fallout3 was fun , you had the wasteland and derelict citys , do you miss megaton? i do! In FO:Vegas its just a little plain , barren desert , none of these monuments , citys etc.
This should have been a addon , most even call it Fallout3: New Vegas.
Infact you can add alot of this with mods.
But does it make it a bad game? nope , its fallout and its fun! , just dont go expecting a upgrade or newer engine , infact all the textures etc are all from fallout3 so hard to see why its so expensive , when all theyve done is add a new world space (small one too). Everything you see is reused from fallout3 , Vegas is a mod.
Still great fun though!