preflop raising questions
 

You are in the CO in a 6 handed game and say the button calls 50% of your raises and plays as well as you postflop, how do your raising standards here change?

You are OTB and the bb who plays as well as you postflop, calls your raise every time, how do your raising standards here change?

Do you ever open limp in the sb or do you raise everytime against the bb when first to enter? What are your standards here assuming the bb plays as well as you postflop?