One thing I'll be watching for are strikeout trends. Sano, Buxton, Park, Vargas, and Castro all struckout at clips north of 30% in 2016. Nunez and Suzuki, two guys who didn't strikeout, are gone. Polanco seems to have good contact ability, but Castro is going to add to the strikeout total. Would be huge to see fewer strikeouts, esp. from Buxton, Rosario, and Sano.