On very hard trading and favour prospects I traded Norris, Upton, Kemp, and various other prospects. In return I got Cano, Sandoval and a few other players to balance out the lineup. I got Barmes at SS for defence, and used Almonte and other Padres players to fill out the OF. C I got a defensive guy.
The pitching is already there for you to win. It's about redistributing what you have in the star players to improve the defence and balance out the team.
But then I find solo leagues are too easy even on very hard/heavily favour prospects
.