As some people say, the social district is the "Endgame for APB", and is kind of true, since some of the veteran players tend to go there and spend some time just chatting and customizing. Sadly, the social districts (both NA and EU) are pretty much empty, not only due to population issue, but place itselft is too big for only 100 player per district, so i had some ideas that might help with that. 1. Cross-server Social.
This one, in my opinion, is the most important thing to make social feel crowded, making possible to have Jericho players interacting with Citadel people. This not only would make social more populated, but also would make the marketplace better, with a bigger variety of custom content (themes, clothes, symbols and cars) and more option of legendary guns on sale.
2. Change the size and/or the capacity of players.
This topic pretty self-explanatory, but going in details, like i said before the social district is way too big for the player capacity, and maybe increasing the number of slots on this district in particular wouldn't be that bad. Combining higher capacity and maybe some rework on the map size would create a more crowded and vivid feeling.
3.1. Reworking some stores.
Keeping on the "making the map a little bit smaller" concept, changing the stores interior with some stuff to make them feel like a real store, just like the Joker Store looks like a real shop.
3.2 Create new stores.
This topic is not a full worked idea, but i was thinking about it while i was writing about stores, anyway, maybe the persona studio should be broken in 3 parts:
The "body morphing" studio: The place to change the body and face of the character.
The "Tattoo/Bodypainting" studio: A place dedicated to Tattoo and body symbols only.
The "Hairdresser" studio: To change hair, brows, facial and bodyhair, and the colors as well.
Moving some of the stores into the mall would be a good way to make the players spread across the map, like the Joker Store, that would leave a big empty area where the useless movie theater could be brought back, with some functionality if possible, or just throw that Red Hill NPC there, with a R.I.O.T themed place.
4.1 Peds and Faction Themed Peds.
Placing Peds walking around the map could help on making the place feeling more alive, and some faction theme peds would do the same on a different way, like some pro-Preatorians citizens protesting against the Idolization of the BloodRoses, or the legalization of Marijuana.
This could make not only social better, but the entire game in general, making peds interact with more objects and the player.
4.3 Faction NPCs.
Placing more Faction NPCs doing random stuff would be a nice addition as well, they don't even need to be interactive, like Javez skating on the QP close to Zombie, or Strega dancing, small things like that could make a difference.
The looks of both of the faction clubs are already good enough, they just need to be filled with some peds dancing, drinking doing club stuff.
6. Object/Item Interaction and Animations.
Make objects interactive, like chairs, benches, stripper poles, QPs, bars, etc.
Make the player able to drink, eat, lean on walls, sit on the floor and furniture.
I believe that's all i have on ideas to make the social a better place to hang around, chat and even role-play.
tl;dr: Cross-server, bigger player capacity, peds,better interaction.