Currently SE review system allows questions' closure by the option of vote-to-close. There is an option of "Leave open" and I have read this to understand its use properly.
I am suggesting that the questions should be closed if they receive a net of 5 (close votes - Leave Open) votes instead of just close votes.
I understand that the Leave Open can take the question out of review queue but still if there is a new question which is on front page and community is divided on the closure then the close votes will generally win due to the current system. This can be a issue in beta websites where scope is still under discussion.
For such cases if the community is divided then why not go on side of leaving it open instead of closure till the same can be decided on meta/by a moderator?