No, i take the Limiter off the Master. Makes it only sound more flat and less dynamic.
I don't know. I just take off the standard Limiter in FL Studio. It ruins the mix.
I've used Maximizer also but it didn't really help my mix.
It's essentially standard, but it is an objective decision. Standard limiters can ruin a mix. Most probably do. If you learn how limiters work and how most professionals use them, you can almost always use it to improve your final mix. Even a tiny but of limiting goes a long way.