Anycase I think more areas like vegas in dlc will make it great, yea vegas wasnt as lively as New reno was.... it had lots of stuff going on and Vegas should of had more NPC fights and Raids going on. Seemed a little less lively after you ran some tasks on vegas. The Kings should of had competition, I noticed some ppl made a mod where they fight the Tunnel Rats.
I think it also needs more lively vaults with little communties in it, not always monsters... I like the idea of the overseer refusing to allow a breach in the vaults society.
They also really should of put "Kick" in the game too, Man I miss being able to punch and kick... Stomps cool though. Maybe someday they will master the ability to throw and do melee combos making the game more unarmed friendly... I really like the boxing in fallout 2 as well, seeing the golden boxing gloves really got my hopes up. Little touches like that make the game awesome, not just a bunch of random arenas but Boxing, gambling, drinking contest.... Peer influeince.. Gang Initiation... Imagine a gang making you overdose on jet to join... A lot of this rpish flavor was missed a little in vegas, the quest seemed very straight forward.