>Over complicated dialog system.
>Has the same dialog system as Fallout 3 but with a few more skill checks.
>Tedious menu crawler.
>Has the same menu system as Fallout 3 and Fallout 4 is just a shiner version of the same menu (the pipboy)
As for New Vegas, while I'm not big on the world map, I do love the gameplay mechanics, the skills, Iron sights, weapon modding. Oh, it's what they brought into Fallout 4. Meaning if someone ends up calling New Vegas a tedious menu crawler, they are calling Fallout 4 the same.