Well then, now I really know what I want for a DLC.... An expansion that makes Legions' role larger. (more quests, more NPC's, expand map (Meaning: Fix the game))
I haven't finished the game yet but seriously, I've found one quest... One!
I've killed around 20 NCR NPC's and "failed" their quests.
I'm loving the game but I knew it wasn't going to be perfect, but I never thought it would be this awfully biased.

Maybe there's more to it which I haven't found but until then I'm really disappointed.
Example: I found a small Legion camp with 2 powder gangers tied up.
But none of the Legionaries had dialogue to initiate.
At that camp shown in one of the gameplay demo's there was one NPC named Dead Sea.
He had one quest.
No other NPC there even had a name nor could I initiate any form of dialogue with them.
But the NCR camp on the other hand had like at least 5 named NPC's and I lost 2 or 3 quests from killing them all.