@lurkero: In what story does Wally recreate by himself the experiment? I always thought that he gained his powers because Barry put his lab exactly the way it was when he was hit by lightning to show Wally how he gained his powers and then a lightning bolt struck him down out of pure luck.
I'm thinking along the lines of the Young Justice Wally West. Unless I am mistaken, Young Justice Wally was intentionally trying to recreate the experiment to gain speedforce powers. We've also heard Thawne on the TV show say that he experimented with speedforce and it wasn't naturally given to him. I think I just want Wally to be the intelligent version of a speedster rather than the emotional version that Barry has become.