Robocop is the latest in a long line of remakes/reboots as Hollywood seemingly runs out of original ideas. Unfortunately unlike Dredd, which was pretty good this is more akin to Total Recall (albeit without the lip sync problems).
In fairness to the writers and producers they did try to make the new Robocop not a direct re-telling of the original, but that is to some extent where they went wrong. Samuel L Jackson's right wing opinionated TV host gets far too much air time and the opening segment, showing the deployment of US robot troops and drones in Iran (!) has little direct connection to the rest of the film. As for the rest of it, without giving too much away...
Michael Keaton is no Ronny Cox as the main protaganist. The original did have the malevolence of Cox's Dick Jones offset by the still devious but well meaning "Old Man" (Dan O'Herlighy) but none of that here.
Gary Oldman dials in his Inspector Gordon persona as the put upon scientist.
Total lack of gore.
Total lack of any humour (no "Mind if I zip THIS up?", or "guns, Guns, GUNS!" moments).
Far too much screen time devoted to the relationship between Murphy and his wife/son. In fact the whole premise of the film seemed to revolve around the mutual angst whereas in the original this element was relegated to a minor segment.
No charismatic police partner. Just an injured guy who spends most of the film in hospital.
No charismatic villain! Just a merc type guy with a beard.
The Blu-ray quality in terms of picture and sound is good enough, though with all the cgi being used hard not to get that part right.
If there was anywhere left to rent discs these days I'd recommend you do so before buying. Otherwise might be worth watching via streaming or Sky before splashing out money on this lacklustre title.