Oh, I understand your position, and my problem wouldn't have been with him choosing his family over the other, it was just that if he had gone through with it, then we would have gotten a big story with him now trying to hide the fact that he cooperated with Sentinel Services. I get tired of characters constantly sneaking around with secrets like that.
That's not where I saw it going at all. I mean, that presupposes that he'd actually be reunited with his family sometime soon. But that reunion would be contingent on Turner actually succeeding on capturing the Mutant Underground and the Struckers (which seems an unlikely thing to happen so early) and then keeping his promise not to prosecute the latter (which seems unlikely in general). What I was thinking was that we'd continue to have Reed working with SS (hey, I just noticed how Nazi that acronym is) and Caitlin and the kids still working with the Underground, each of them getting more entrenched on opposite sides even though both of them see themselves as protecting their kids, and eventually coming into direct conflict, each of them unable to understand how the other could've made the choices they did. I think that could be an intriguing dynamic, two spouses starting in the same place and with the same goals but making totally opposite decisions for what they thought were the right reasons.
I wonder how long it will be before we get to learn exactly what the big incident was that killed Turner's kid and possibly took out the X-Men and Brotherhood? He said something about an energy blast that killed his kid (daughter?), so I'm thinking it might have been similar to The Stamford Incident from the comics.
To me, the phrase "energy blast" suggests something like the kind of individual energy-projection powers that many mutants have, e.g. Cyclops's optic force beams or Eclipse's bursts of light, rather than a massive explosion. It sounded to me like she was caught in the crossfire of a battle between the X-Men and the Brotherhood, and there were so many fighters and so many kinds of energy bolts flying that it was unclear which mutant the fatal blast came from. At least, that was my impression.