The fault lies where the two plates collide. This can't be redirected. At absolute best, over the course of millions of years, you could break larger plates up

The fault lies where the two plates collide. This can't be redirected. At absolute best, over the course of millions of years, you could break larger plates up into smaller plates and make a bunch of smaller faults. I don't know that this would ultimately be beneficial, and I have no clue how humans could do it.