How come the USS Vengeance features hull components that seals up it's deflector dish? Doesn't it seem a bit redundant that the Deflector dish needs a deflector when it can already be protected by deflector shields?
For when the deflector shields are down maybe? Dunno.
Usually I watch Star Trek and expect the tech to make sense. I've learned to let that go with the new Trek. Still bugs me but doesn't kill it for me anymore.