I ask this because I think this would be a cool idea in some future plot points or arcs; a meditation technique, a classic sci-fi literary device (alternate realities, time travel, etc) or some crazy new Force Power.
Before you think this is "impossible", look at the physics that are taking place--Multiple worlds light years apart from each other, that we can get to in a matter of seconds (hours, if you wanna be pedantic about it). Well, then, the idea of traveling in time or having some sort of communication with the future is physically possible--if we can travel FASTER than light, time travel is completely plausible.
so, with physics on our side, all that's left is a reason as to WHY we would contact the future, or the future contacting us. i just think it would be really cool to see Luke (voiced by mark hamill of course) rebuilding the Jedi Order, the temples, etc. maybe the emperor in our time has figured out a way to affect future, and his imminent presence will threaten the future peace! blah, blah, blah, blah, blah--i mean, it's not hard to see where this could go.
physically, it's doable. canonically, it might be a headache. thoughts?