Just be patient and keep waiting. You've already waited 5 years for half the game, why not wait some more for the second half to arrive as DLC?
Second half that's good.
Realistically, I don't mind waiting a while for high quality story DLC, especially if it is in some sense the "second half" of the game where the designers get to put in all the fun features they had to cut (many things that we expected and hoped would be in the game) to get the game out the door in 2013.
More sarcastically, I would say that Rockstar has realized that story mode SP gaming is a dead end, while the magic of multiplayer gaming is that half of the online population never gets tired of destroying the experience of the other half. This is the engine that drives GTA Online.
That is, in sound bite form, "Bullying never gets old." So it makes sense for Rockstar to support that natural trait of mankind, and to continue to design the online game so that the greatly disadvantaged lower levels will grind their asses off to gain parity with the assholes who have ruined their gaming experience, either to take revenge, or so that they can bully the next generation of kids coming into GTA0. It's a beautiful online world ....