Recommend some Fallout 3 mods.

Okay, I haven’t played Fallout 3 for a few weeks and want to install a bunch of mods. There are so many already and it hasn’t really been long enough for the best ones to rise to the top of the pile. I get bogged down trawling through the mod forums.

Hopefully, in this thread, people can say what their looking for and others can recommend mods they’ve tried.

So, here is what I am looking for:

Removal of the level cap.
More traditional Fallout content.
More (balanced) weapons and armour.
An altogether slower paced, more difficult game.

Any suggestions?