I hope Merrifield is even 66% this good. What's funny is he's only played LF twice, 2B six times (I think he's in LF today).
The best team still has Rojas and Marsh starting and Merrifield on the bench.
And really, the $ still isn't a big deal. Merrifield only makes a million or two more than several of the bad relief pitchers the Phillies have been willing to cut. And now that they have signed Wheeler there is no way they'd take on a large pitching salary at the deadline. If they take a bigger on with a hitter, it won't be the Merrifield deal that tips the balance. If they had been able to sign a relief pitcher for $8-10 million they might not have signed him. Or they might have given that money to another OF and actually put some teeth into the idea that Rojas had to win the job. Either way, it was already budgeted. The (potentially) better cheaper players are either guys the Phillies didn't like (you can argue Duval and Grichuk are too similar to most of the other hitters) or guys who rejected the team's description of their role.
Plus, most big deadline deals with bigger contracts include money picked up by the seller unless it's someone controllable.
I'll be very surprised if the Phillies finish this season in the highest tier. And they should be able to avoid it next year too, unless they have to replace a current starter or Walker with a free agent.