Firstly, I want to say that I am new here and I didn't take the time to look if something like that has been proposed before. And that is because I don't have much time these days. Anyway, what I wanted to propose is that you add an option to put a specific file the most outer track of the disk. I am no major programmer but as far as I know the outer disk tracks have higher transfer rate than the inner. This could help in occasions when you have a program (game in my case) that you want to run at the best performance but do not use it very often. Isn't, by the way, the Defraggler based to move the most used files in the outer tracks and the less used to inner? That's why I say to put an option to place the data in a desired track no matter of how of often you used it.
I hope I am saying that worths trying and I am waiting for replies.