Can you do invites to get people to start near you in that Soriak?
I don't think so. Location in this game matters, from what I gather so far: players have to try and move to the center, which is dominated by enemies. So you have to make progress to get closer. But if you start on the same server and in the 6 o'clock slice (it'll make sense on the screen), you should be pretty close. There are open spots near me.
Also, you can move your base once you're a couple hours in. You won't produce resources for 2hrs or so, but can move up to 40 fields. I think the idea is that as you level up, you'll take your base further in where, I presume, higher level enemies are.
edit: I think the benefits from being near others don't materialize until later. If you're in an alliance with someone, their territory is considered friendly and it costs you fewer "command" points to move through for attacks. Also, you can defend nearby allies' bases, which I suspect is useful in PvP. You can't be attacked for a week, so there's that (might drop if you attack someone else, but everyone around me is shielded as well). Hopefully by then we're all closer to the center.
edit2: Looks like the game has a referral link now:
https://alliances.commandandconquer....6orpxG6GsG3xIw
Only in-game rewards from what I understand; the game is actually fun.