Kiké's hitting has been so bad this year that the optimal approach for now is probably Reyes at short, Arroyo at 2B, and Kiké as a super-sub/4th outfielder type. Reyes has the exact same wOBA as Kiké, and even has a better expected slugging percentage. But even if Reyes was a bit worse offensively than Kiké I'd still be advocating for this because he's just that bad in the (in)field.Play the best defensive SS you have at the position (Reyes). Kiki can play 2b, Arroyo is the backup (or vice versa). The downgrade in offense from Arroyo to Reyes doesn’t seem terribly significant to me .
(If Chang comes back, he can replace Reyes).
Edit: I swear I posted the above before I saw the news that the Red Sox are doing exactly this. You can only ignore the numbers for so long.