Well, it's a fair question. But Freeman was worth 3.5 at 36. JT Martinez, a less favorable comparison (2.0 WAR at 35 despite an .893 OPS).
I just think where the Phillies are in their window and where the market is they just need the bat and the catcher more. The RH power bat is still extremely elusive and to replace Schwarber would still be costly. The Dodgers are showing you can never have too much starting pitching but that's also combined with having the line-up they do.
I'm all for bringing all three free agents back if they have the financial mettle for it. Offloading $5 million of Nick and $9 million of Taijuan (that's probably high) would help. Otherwise let Ranger go, try to extend Luzardo, and sign a depth starter or a mid-level FA on a shorter deal. Bowden suggests Bieber will get $75M/three years, with play opt-outs.
Or wait for the deadline, they are probably still a playoff team - maybe even NL East champs again - with Painter and Walker as 5/6. Though that depends a lot on Wheeler and Nola too. The amount of info they have on Wheeler once FA starts for real will probably be important.