First, I will say that this is pipe dream, but you will have to use your imagination.
If you had 3, and ONLY 3 wishes, what would they be? Would you wish for an HO scale layout modeling EVERY mile of US rails? Or would you build a railroad? The choice is yours!
I will post my wishes after a few replies.
NO ASKING FOR MORE WISHES BECAUSE THAT'S JUST GREEDY!