Because there is not much English interaction on the Sea forums (well not as much as the US forums), I have created a US account spercificly to interact on the forums.
My suggestion is, allow users to link their preferred profile to their forum account. So for example, I could link my SEA world of warships account to my US forum account.
This way on the I could post on the US forums with my SEA acocunt (with games played etc). Could just put, "SEA Player" under the profile pic.
I'm fairly sure the forum is capable of doing this. And it would be a really nice addition.