They need to make sure nobody could enter without actually paying. I seen kids jumped over the MTA thingy all the time to skip on fare. They can put doors or bars there and make sure there will be maybe two entrances only and put some MTA ppl there to make sure ppl can't enter without paying. I bet that will reduce the crime rate. But ultimately, the city needs to solve its homeless problem. Moving them from the subway to the street won't actually solve anything. If anything, it will only make matter worse. You can avoid them by not riding the subway but it is hard to avoid them on the street.