I don't know if it's a matter of missing mods, it seems to be more of a case of folks wanting the game modded to personal taste. I think that it is more the latter, just an observation.
One thing I have learned with this series is that just when you think your set-up is complete, somebody comes along and puts out a mod that you just got to have, so the experience is always changing

That being said, you need a great base mod to begin with, and from what I have heard, 2.0 gives you this.
RDP