The question with Simmons is whether you want to be paying him 11m, 13m, and 15m in 2018, 2019, and 2020.
I'm entirely ambivalent about it. Much of his value is historically tied up in his defense.
This year, his offense has popped in the first half due to a power surge, a few more walks, and higher than normal BABIP.
The last time he had a power surge, it disappeared for three years, so it is hard to say if this is permanent. He's 27 so maybe he is transitioning into his older body and strength, or maybe he's getting a bit lucky in a season where balls are flying. His HR/FB is far above what it has been before, for example? Perhaps he had a great offseason in the weight room and is in the best shape of his life? Could be.
Any event, this is the first time he's been an above average hitter. Is it a sample size issue? If the power is real, he starts to play as an all star caliber player, but absent power he's really just a 2-3 WAR player on the strength of defense.
Maybe someone will be around to drop a defensive deterioration chart later to shed light on his reasonable expectations there.
If the argument is he should have been traded for something better then fine, though I don't think he was particularly perceived as especially valuable.
Three years of Simmons at 39 million or 6 more years of Newcomb cost controlled?