Yeah the straightforward quests are sometimes a little disappointing.

I.e. there's a tiny side quest where you have to get some rich guys wedding ring back from his fiance. You go to the fiance and that say that they saw the rich guy cheating (having a conversation) with the waiter at their favorite restaurant, and that they shouldn't have to give the ring back.

I went back to the rich guy to find out if this was true, and to insert myself firmly into their drama, but there was no new dialogue from the rich guy. I just had to pick a dialogue option to either take the ring or let the fiance keep it.

It would have been nice to be able to confirm my suspicions that they were just being friendly with the waiter, not cheating, and maybe get the two back together. But no it was go to person A, get quest, speak to person B, return with ring/update that they are keeping it.

There are some great quests, and lots of cool world building, but the RP portion is sometimes a bit lacking compared to (as you mentioned) New Vegas.