Im using madd leveler, does this mod make you fall over when your stamina reaches 0, or is that a vanilla feature I just havent noticed?

Does the level cap remover in MCP make the 'madd level cap remover' esp redundant?

Not just redundant; totally incompatible.

Never noticed falling over, that might be an MCP option.

1. You can get knocked down anytime someone hits you really hard, but you get right back up again. This is like a stagger.
I believe Strength increases your chance to stagger, and Agility prevents it.

2. But you can also get knocked unconscious if you have zero Fatigue and get hit with Hand-to-Hand attacks. Then you will just lay there until your Fatigue restores a bit, and H2H attacks will reduce your HP when you're down like this.

Both are vanilla features.