Let's look at EA's history of games... FIFA, Need for Speed, SimCity, Medal of Honor, The Sims, James Bond, Battlefield, Madden NFL, Burnout, Crysis, Army of Two, and that classic.... Theme Hospital
Can you see GTA IV being in that list?
Most of those games are horrible, either will really good graphics and medicore gameplay or nothing at all. EA is a really bad company in how they do business, especially with Madden NFL. They couldn't handle the competition from 2K's better, cheaper football title so they bought all the rights to the NFL teams, now they are the only ones that can make NFL-based games.
Battlefield 2 was good, but fuck EA's greed. Every $20 expansion for The Sims. Every $50 "new game" which is just BF2 with a few new models/maps, etc...etc....
Never happen.