So i've completed the main game and all side missions for the 3 main characters. Is there anything else to do besides collectibles (parachuting, case,parts) and getting gold on missions?

I guess if there isn't, OCT 1st!!!!!!

Find the many easter eggs.

Send me the game ;D

This has been an issue with the last two GTA games.
Specially now that the game is divided into three characters, the possibility of building your own empire from scratch through sandbox activities (buying businesses, safe-houses, turf wars, etc) is no longer as satisfying as it once was.

It does seem to be better than GTA 4 though, you couldn't even buy businesses, or do that stock trading, or anything, besides the story missions.

There are tons of side missions/activities that are not character specific, races, triathlons, hunting and so on. Other side missions open up on purchase of certain properties.

Alright found that buying certain properties opens up new missions, like the docks.still says i have 15/20 freaks or friends missions done. So i guess i need to buy more shit.

If you haven't taken a look at your profile on the Rockstar Social Club, it tracks your 100% progress in a bit more detail than the stats screen in the menus, but even that doesn't necessarily cover everything there is to do though.

Also, does anyone know if it's possible to go back and do the other option for the heists, or does that require an entirely new playthrough (I imagine the later, but I thought I would ask)?

@chaser324: If you replay the heist mission you get to choose which option and who to bring again, no need for a second playthrough.

I just discovered you can call the other 2 player characters to hang out, I am about to go rob stores and cause mayhem with all 3 guys together! Also, earlier I rode a dirtbike onto the back of the train. Felt good.

@jking47: Awesome! I'm looking forward to going back and trying out those other options.

What are hobbies and pastimes?

@bigjeffrey: Golfing, Tennis, etc.