Generally enjoyed it. Found Pike's vision of his unpleasant future illuminating, but hardly unexpected. Seems to me that the whole time crystal thing is a bit hokey, but then again, so is the whole spore drive thing.
I found loopholes.
If he hadn't taken the crystal that future doesn't seem set in stone. Taking the crystal means that future is set in stone so events later on Talos IV happen just like we know they should.
Also the torpedo might not have exploded had he stayed in that room. Or it might have and that would rule out what the crystal showed. So loopholes.