Guild Wars 2 used to do this quite a bit with events relating to Southsun Cove and Living Story Season 1, but Anet thankfully changed that starting with LS Season 2, where that now you can basically explore the content whenever (although admittedly some gems are needed to access previous living story seasons). They also ended up bringing back a few parts of LS season 1 too, mostly instances to add for Fractals or new ways to get a lot of the skins from that time.