Meh, I finished that game on PS3 last year and I honestly never want to touch it again...
Outside of its visual/performance issues, the game is just boring. There's a huge lack of mission and location diversity compared to SA, alongside less weapon, less cars, no planes, no purchasable assets, less character customisation etc. The game also controls like ass, with the vehicles all feeling like boats and the cover system being too clunky. Even the story is pretty flawed, with it starting and ending great but having a lackluster middle. I felt like giving up halfway through the mafia wars.
A remaster would be cool for those who want it, but rockstar will probably mess it up like they did with the 3D trilogy. Personally, I think the game should be left in the past.