Their starting rotation is set: Wheeler, Nola, Suarez, Walker and Sanchez. They will be fine with a full year from Harper and the real Trea Turner. Getting Schwarber out of LF helps. A better hitting backup catcher to give Realmuto more rest. Need someone to replace Kimbrel.
Not sure why you think Matsh numbers are not sustainable. He is a second round and was a top prospect for the Angels. And Kevin Long no doubt helps.
https://www.prospectslive.com/scoutingreports/brandon-marsh
Because his BABIP is .397 and his xBA was .233. If the plan is Marsh in LF, they're looking for a middle of the order bat at the deadline.
Nola is a 3 at this point. Suarez and Walker cant stay healthy. Sanchez sucks and should just be moved to the pen. They need another pitcher to go with Wheeler. The emergence of Orion Kerkering and Jeff Hoffman means they dont need to find a replacement for Kimbrel. Never should have done it in the first place, TBH.