Played it once on the 360 and didn't finish.
I've beaten it multiple times on the PS4. The enhancex graphics, added weapons, vehicles and features (1st person) made it enjoyable for me.
Only wish more buildings could have been entered. Otherwise, the city actually felt somewhat alive.
If they can incorporate the restaurants from SA, more ways to interact with peds, and more of the interactive media on the in game Internet similar to GTA 4 & 5, the next one could be the most "alive" city ever created.
All time enjoyment, I still put this one directly behind San Andreas.