I've always wanted a sports sandbox.
Let's say....football, American for the hell of it. You start out as a kid going into college, maybe the game starts with you playing in the high school national championship game or something similar...you play it, do well, or not, whatever. Now you go home, you hang out at your parents house, at the mall, your girlfriends house and what not waiting for those calls. You get calls, pick which schools you'll visit, then go visit them. Walk the campus, coach takes you to a strip club, meet players, other coaches, hang out and so forth. You pick your school, play games, go to class, goof off on down time which could be just hanging out at the gym, or your room, whatever, it's sandbox, do what you want until game time.
So then you play for 4 years in college, you play well, you get drafted, but you have to do the combine too, do well, move up in the draft, suck ass move down, skip it because your projected # 1 and hit the clubs all weekend, or shit, skip it because well, you just want to skip it.
You get drafted, move to your new town, find your fav hang out, hook up with your dealer, meet chicks, go to the park, practice, sit and watch a cribs episode about your crib. It's sandbox, do whatever you want, well, until you have to play a game that is.
The possibilities for sandbox are really endless...whatever late night caffeine induced insomnia idea you can think of will work...try it, post the freaky ass concept you think of here, we'll all love it...or at least tell you why it sucks. :p
Take care,