Let me just say that I consider myself to be a hardcore adventure game fan, and if Telltale doesn't allow me to disable the option to Retry (ie. restore to a safe point immediately before death) I will be annoyed.
Now, granted I will also not say that KQ7 was a bad game. Sure, it has its issues for me personally (ie. a chapter select screen at New Game; single-action cursor; Retry upon death,) but they are not enough to qualify the game as worse than KQ5 (which doesn't have a Retry option) though I believe KQ7 would be all the better for fixing these things.
Still, I would certainly prefer and greatly appreciate the option to disable Retry and, separately, Autosave in Telltale's KQ.