Nelson can play 1b, 3b, LF, and RF, though probably only play everyday 1b. I think he could have a gabe gross kind of impact at least, as a hitter, but he'd play some 1b and 3b rather than cf. I don't think he'll ever be the brewers starting 1b, barring injury. your hypothetical 500 major league AB next season: .250/.320/.470, 18 HR, 4 SB though he has typically needed a second season at a level to do well.