Mag disconnect and manual safeties fine by me.
Main thing that would eliminate a gun for me is being unproven. Seems even guns well regarded now often had growing pains their first few years, so I never rush out to buy the newest toy on the block. Once it's been around ten years or so I'll take a look at it.
Bells, whisltles and tactical nonsense also turn me off pretty quick. Oh and if the they call it the "Lady Reno" or "Rosienator" I'd pretty much pass