Re: Scratch that, reverse it Edge of Tomorrow...
What bothered me mostly about the plot was Blunt had the ability to reset but lost it following a blood transfusion.
How could she know that she'd 'lost' the ability, she didn't know how it worked when she had it, only finding out after the first and subsequent resets, therefore the only way to know she'd lost it would be to die and discover that she was now dead, not much use. Sure she felt 'different' but you would if you'd just come out of hospital following major surgery. Presumably she'd lost the ability and decided not to risk getting killed again when TC conveniently turned up.
TC losing the ability and getting it again for that odd final reset seemed a little crowbarred in, still, enjoyed the film.