I think if Burger king put a drive through there they would do a whopping trade as an alternative to Maccies.
I suspect fast food depends heavily on passing trade. If the passing trade is on foot, the 'drive in' facility is not an attraction. For motorists to take advantage of it in this location, they have to make a conscious decision to drive there. I doubt many will. There is no passing traffic to speak of where it is proposed and it's not exactly a visually attractive area in which to sit in the car park to eat your grease burger either.
I've no retail experience, so could be quite wrong. Wild horses would not induce me to eat in the horrible 'food court' either, but obviously many do!