Honestly I would say it depends,I had it before making the jump to next gen console and i must say the coolest part I enjoyed was actually the 1 player story.
In terms of the multiplayer I wasn't to thrilled by it as it all seemed like repetition in order to earn the in game cash and unless you run in a group you tend to get wasted everytime you bump into a random player
Since I played it heists have been added which I might add I haven't experienced.They could well change It up or once you have done a few heist they too could become repetitive in nature.Suppose it all depends on the person playing the game.