I think Blaine's amnesia is genuine. Right now, Chief and Don E. are exposing Blaine and his entire operation to all kinds of risk by moving Lucky U, and generally being very careless about it. It's hard for me to buy that he would stand by for that in order to play "the long game" whatever that might be.

Major can't exactly blurt out that Vaughn is making him do it, or that he's not really killing them but freezing them. Remember, Vaughn's people have him under surveillance and if he speaks up, he'll send some other merc to take out Liv. Otherwise he'd have let them all in on the plan long ago.

TWD has been pretty clear about it, actually. Everyone is already infected. There is no risk of catching an infection from zombie blood, or a scratch or whatever. When you die, you will turn (unless your brain is destroyed).

Gideon isn't something they have sitting around in the time vault and have forgotten to use. Gideon was removed from the Time Vault by Thawne/Wells back in season 1.

Am I the only one who got the impression that Darryl might—just maybe— have been affectionately messing with Denise by grinding the gears just to grind her gears? Much like how Rick kept jerking the wheel to make Jesus fall onto Darryl a few weeks back?