Let us discuss what we learned from the Teaser trailer that hints about 5.0 plot being a "Time Skip" that will lead WoL into a world he (or she) is no longer needed in the future and he (or she) "saved" the world from the threat of Ascians.
So far we know enough time have passed since the defeat of Garlemald that the WoL now is no longer needed in the world to a point that the Light he or she faught to protect is attempting to discard the WoL by force.
Do you think this will be the permanent setting for 5.0 timeline or a small moment in 4.5 so the WoL is sent back to current timeline?
If you assume 5.0 timeline or a small moment in 4.5, explain how do you think this may affect the story for 5.0.
For me, I am assuming it is in 5.0 timeline because it will setup where 4.4 left off being what became of the bodies for everyone after the time skip. I am guess in 4.5 the WoL will experience that final battle scene in the trailer. After that the WoL is finally sent into the future thus waking up right in the middle of the battlefield to replicate that teaser trailer seen (slightly altered so no "Job change") only to be saved and later learn the WoL been missing since that final battle for years. This scenario is my assumption because the Child of Light shown in the teasers is in the future and for WoL to protect the child of light, the WoL must also remain in the future.
This scenario would fit for a small moment for 4.5 as a temporary thing as well but then we will not have a reason to protect the "child of light" in 5.0 that the teasers shows the WoL protecting since the child of light is in the future being protected by Thancred.