Back to the Future is not a "perfect movie"

But it's close! And I have taken it upon myself to fix it.

There are a couple things that don't sit right with me, mainly the idea that in the end (SPOILER ALERT as if someone hasn't seen it) Biff is employed by the McFlys to wax the car...after attempting to rape Lorraine?! Why would you have that man anywhere near your family even 30 years later? I don't like it. Then something else occurred to me:

Act 1: uncle jailbird joey didn't make parole

Act 2: Marty tells toddler Joey to get used to the bars in his playpen, referencing his future jail time

Act 3: .....? What ever happened to Joey? It was never addressed.

My rewrite is simple. In Act 3, alternate future 1985, Joey has made parole and it is he who is waxing the cars, and then he has one line of dialogue mentioning how he saw Biff in prison, where he belongs!

Do that, and BTTF is now a perfect movie.

Thoughts?