With confirmation that Men In Black 4 is a go, speculation is already mounting as to whether or not a fourth installment will build on the success of last year's belated third outing or if the franchise should have just quit while it was ahead. Given the relative unpopularity of MIB 2, similar questions were asked of the third film before it stormed onto the scene breathing new life into what appeared to be a dead series. Now it seems that even leading man Will Smith has his niggling doubts about carrying on. Rumours circulating Hollywood seem to be indicating that Smith is yet to sign on for a fourth film, perhaps to focus on his own production efforts. Whatever the case may be, it seems Sony are determined to push ahead having hired screenwriter Oren Uziel to pen the script. Hopefully Uziel can fit this project into an already packed schedule that includes the much anticipated 21 Jump Street' sequel as well as the 'Mortal Kombat' reboot. As you know, we at What Culture prefer to look on the bright side, so we're hoping this film is awesome. With that in mind, here are 5 essential ingredients (in no particular order) that we think would make MIB 4 a hit with audiences. Let us know your thoughts in the comment section below. Enjoy.