Guildwars2, existing in multiple times.
Maybe the personal story could exist in a ‘pre-searing’ type mega-instance, and once it’s completed, the character could enter (reverb) the Living World (/reverb) which could reflect any world-changing changes that happen to happen.
Actually, as long as that “pre searing map” is still accessible.. it may work might even make the living map an 80 zone, with minimal work required by devs :P
Yes.
It is actually part of the lore. It`s all in the mists.
Who do you think we fight in WvW? Other server, or in that case, other Tyria. Other dimensions, etc.
Call it what you want.
Essentialy the mists are the writers free for all card so far, because the mists are everything in past, future and now.
If we put the fractals into equasion we even got timetravel, multiple dimensions and quanten into the mix.
However, in reality this is just a game and these are the limits of world building.