It might be an entire Warp populated only by ideas (or people) whose time have not yet come, by [indeterminate half-dead/half-alive cats]? belonging to certain theoreticians, and by, for brief visits, the occasional time-lost soul.
It might be a place where everything seems better than the present, because the future is full of possibility.
It might be a place where everything is catastrophically worse than the present, because the future is full of possibility.
It might be a place where possibility has no meaning, because everything is still possible, there.
It might have boundaries smaller than one would expect.
Or does it?