So recently, I've formed an idea. It involves making a website outside of the game - which concludes of in-character social media. Below I'd like to state some of the features this site could include.
-Tweets (with trending hashtags)
-Simple imagery uploading from within the game, allowing for people to better admire GTA's scenery and share it with others
-Market for players to list items they are selling (vehicles, housing, etc.)
-Ability to add friends and (maybe) allow DM's
-Post events, whether it be last minute ones, or well-planned ones.
-Create groups (kind of like the forum has already, except lift the limit and have the default page sort by members)
-Business Page, one for government (or official businesses) and another for player-run businesses.
-Application system for businesses, players can state achievements, past work, education, etc. on their page and submit applications through the social media.
-Profile to display place of work, friends, posts, gallery, and albums.
This is just some of the ideas I've come up with, and if you guys have anymore, PLEASE post them down below, also if you think any of the ideas I posted above might not be that great to implement, feel free to share criticism.