The top seven players by plate appearances - Adames, Yelich, Anderson, Tellez, Wiemer, Contreras and Turang - have registered positive WAR ranging from 0.5 to 1.3 so far with Wiemer (73 wRC+), Turang (81 wRC+), and Adames (91 wRC+) getting most of their value from defense. Wiemer and Turang should hopefully improve at the plate as the year goes on, while Adames is lagging behind his projections by around 13 to 29 percent up til now so should be due for positive regression as well.
Miller (120 wRC+ | 0.7 WAR) and Caratini (124 wRC+ | 0.4 WAR) have also provided positive value in reserve roles.
Between Taylor, Urias, Frelick and maybe even Black we should hopefully have reinforcements for that eighth position player spot coming shortly, which just leaves DH. Hiura injury is a bummer there, but otherwise it is the easiest spot to fill so I would expect at least one bat to be acquired at the deadline if Winker doesn't start doing something besides walking.
On the pitching front it gets a little dicier. Now down to Burnes and Peralta as our only "legit" starters. Houser rounding back into form, would imagine Lauer gets moved back to the rotation with Miley's injury, then the questions begin. Getting Woodruff back should be a boost, but would guess at least one starter is targeted at the deadline (or maybe even before if they want to get a lil extra proactive) as well.
Bullpen (along with the defense) has been the saving grace of the team to this point with their +3.18 WPA topping all of MLB after last night's gutsy performance. Williams, Strzelecki, Payamps, Milner, Peguero and Wilson have six spots capably filled which just leaves a couple spots at the back for roster churn with a number of intriguing arms in Nashville to cycle through for MLB looks. Either way would not be surprised if another relief arm is acquired come deadline time.