I think almost the best reward will be gold support bundle, but also you will be able give 1 bundle to 1 friend(i don't mean you will give your own bundle to your friend). His/her bundle will depend on his/her points:
Silver bundle: 50 or more;
Bronze bundle: less than 50.
The content of the bundles is good for the game, but they have "support" in the names, so that's why maybe it mustn't be a reward.
So that's why i made a poll.
There wasn't enough place for the 1st and 2nd answers so i wrote them here:
1. Yes, with the bonus bundle for a friend;
2. Yes, but without the bonus for a friend.