If i remember right, Yoshi-P did say he wanted Season 2 storyline to be unrelated to the whole Zodiark versus Hydaelyn conflict the entire Season 1 storyline focused on believing the Zodiark vs Hydaelyn conflict should truely end in 6.0 as this has been the moment they worked on for so long to finally reach.
With this in mind, Season 2 most likely is not going to continue Season 1 storyline but act more like FF14-2 storyline where WoL face a new antagonist (or antagonists) that brings in a new threat to the world. There maybe mention of Season 1 stuff and maybe have certain parts of Season 2 events related to something Season 1 but the whole Zodiark, Ascians, and Hydaelyn conflict should be over.
How Yoshi-P and the development team can set this up are mostly guesses now but this is why I think Season 1 ending maybe a semi-clean slate event where WoL sacrifice himself/herself resulting in everyone forgetting about WoL. It will set WoL in a clean slate position while still recognizing that Season 1 still happened but people lack of remember WoL will not make them desire to drag him/her into their country's politics and he/she is treated as a normal adventurer. Thus the beginning of Season 2 storyline through 6.1 to 7.0 can focus on WoL starting back in his/her roots and slowly building up into once again saving the world from the new antagonist.
Along with some potentially interesting story once they reach that point since with people no longer remembering WoL, they can go over how easy the WoL had the ability to gain access to thing simply because of the stories being told about his/her actions as WoL compared to now when WoL is just another adventurer. With the fame all gone and reduced to a normal adventurer again, WoL may have to get a bit more creative to get people to listen or the story may provide a emotional reunion with certain characters (despite them not remember WoL) to help WoL get people to listen to him/her about the threat the new antagonists will bring.