If Valkyrie is the Han Solo of the movie, then we can likely guess that she will eventually fully embrace the path of the hero in the same way that Han did, though just because Valkyrie is inspired by Han Solo doesn’t mean the character will follow the character arc perfectly.
And really, every movie needs a Han Solo, doesn’t it?
The fact that the Star Wars prequels didn’t have any sort of analog to Solo is one of the biggest things those films are missing.
Every movie could likely improve itself with a good scoundrel with a heart of gold.