We're at that point where the new year has ceased being new by any stretch, and based on Rockstar's recent reveal of their upcoming plans for GTA 5, 2017 will be as busy in terms of content as any other. However, amidst all the DLC the game will be getting, we're pretty sure that story DLC will be missing. Players have been holding out hope for over three years now and it's harder every year.
Those players who jumped on the bandwagon later on might not know that when GTA 5 first launched, Online didn't — a month passed between the release of the base game and the multiplayer component. All those glowing reviews that praised the game were based on the singleplayer alone, written by reviewers who never touched Online at that point.
GTA has always been, first and foremost, a singleplayer game. Very few entries in the series even had multiplayer capability and none were as developed as GTA Online. This most recent entry stood strong on its campaign alone and gained popularity by virtue of its story, characters, writing and vibrant living open-world.
To think that there are players out there who only touched single player for the tutorial that has to be completed in order to access Online is almost angering, especially considering how much effort was put into the story of the game and the legacy of the franchise. GTA games of yore used to get story expansions, and each spin-off title would have memorable protagonists and stories for players to immerse themselves into.

And here we are, almost four years to the release of GTA 5, and the singleplayer is more or less identical to what it was on launch day. On the flipside, Online has gotten more DLC updates than there are games in this series. These updates range from the major to the minor, but they all added content to the multiplayer mode that cannot be accessed when playing solo.
While most GTA games that came before had glowing plotlines, GTA 5 had the deepest and best-developed storyline and setting. The plot was a complete package, but still allowed room for expansions to add to and continue the tale. There were so many characters in the game whose backstories were more than colorful enough to fill an expansion.
Rockstar was aware of this too of course and in good GTA tradition planned additional singleplayer content. They went so far as to officially announce-slash-tease singleplayer DLC on the Newswire at one point and promised to "continue the tale of Trevor, Michael, and Franklin". Now, those of you who chose one of the non-C endings of the story will know that this either meant canonizing C or setting the expansion before the end of the main storyline.