Count me in on Benintendi. Peterson's hot streak has kind of masked the need for another lefty bat, but with both Yelich and Tellez slumping, they could certainly use him, and there's certainly room for a lefty DH though they could go with Peterson there too.
The offense from the OF needs to improve. Renfroe will help, but they could use more consistent production from the rest of the group.
As for help in behind Taylor CF, anyone noticed that Albert Almora has seemed to be reborn in Cincy? His defense was never in question.