Darth Venal said:

DuTwan:

the force was a mystical energy that could be wielded by anyone with the right training, the force was stronger with some families.

Well that sort of contradicts the point you're making.

There's a simple question: Why is the Force stronger with some families, as Return of the Jedi establishes?

Answer given in the prequels: It's genetic.

Again, I don't like the writing in the PT at all, but I don't see why a genetic quality is such a bad thing with regards to Force sensitivity. I think Lucas wrote it very badly, but perhaps that, coupled with all the genetic manipulation/cloning stuff going on was his way of making the PT relevant in some way.

I agree with that. But still, the midis didn't really add anything or answer questions needing to be answered. They merely created more and then sorta dropped out for two films with a bit of a mention in ROTS.