Speaking of the Bureau, personal theory of mine is that Carter's Ethereal never truly left Earth, but took the time to mature and grow in power. Then, when the New Ethereals came, the Old Ethereal found the Commander of XCOM, and did the same thing it did to Carter, only this time the Old Ethereal had more experience, so rather than merely slowing time like Carter experienced, time could completely stop from the Commander's perspective.
Of course, just theory. Also, hate to jump on the critique bandwagon, but considering this is my first time role-playing since the early days of S3, it'd be nice to see how others view my character.
EDIT: Completely forgot to link to my post!
Here we go!