The lid closed ?

I was just wonder, for all of us audio guys who have a turntable with a plastic lid attached, does it make sense to totally remove it. All the super hi end tables do not have a plastic lid. Also if the cartridge is that sensitive to the room, the table, the motor, the speakers; being to close. Is it that sensitive to having the lid closed and picking up on the echo/ chamber created by having the lid closed.

Any thoughts?? I am inclined to remove mine