You can not force people into a particular faction. Also, you can not punish a player for choosing a particular faction. Doing so is nonsense.
What we need is a third faction.
Lets wait a month after launch to begin calling out imbalances. A lot can change when the floodgates open.
They aren't going to add a third faction so no point wishing for that.
You can punish the player for choosing a particular faction. With so many Sith it will be harder to "stand out", therefore only getting half the medals sound fair to me.
Waiting around doing nothing is nonsense - we've seen what it did to WHO. If this game flops because of faction imbalance it'll be a really needless tragedy.