I don't think he's Leeto II ... No. He would never be that selfless, or even take an action considered selfless and improvement for anything but his freedom and bank account. Any sort of other impact would not have been considered in his decisions unless it changed his net worth or perhaps made lots of people adore him.
For those that don't know you have to make it to book 4 of Dune for full explanation. Though explained in book 3 by the end, you see it properly in book 4. Not for everyone with a lot of philosophy in it.