What this film needs is...

The Flight Of The Phoenix is a film about survival, cooperation and ingenuity starring Jimmy Stewart and Richard Attenborough.
The Flight Of The Phoenix is a film about explosions, starring a bunch of machinegun-wielding blokes on motorbikes.

So, the challenge is this: name another classic film which really could do with more machinegun-wielding blokes on motorbikes. My vote is for The Wizard Of Oz. Now that's a movie desperately in need of some Mad Max type action! Vroom!