FLUSH MOB FARMS

Allow flush mob farms I think many people have built them but then they learned to have to tear their terrific creation down. most of the time only one person is afk. I learned this the hard way by building the entire Ilmango mob farm and someone told me I had to tear it down. Please allow flush mob farms they are wonderful and help people a lot. If you want to make a survival server than let them make what they make in singleplayer survival worlds. Please make this a chance so people can have flush mob farms. Thank you!