Silverwastes
You lose nothing, the zones are open to everyone even people/characters who haven’t played the LS, the only thing gained from LS is achievements + instance rewards.
They’re completely separate.
Even if you didn’t have Season 2 unlocked and had never played any of it on any character you could still go to Dry Top and Silverwastes and do everything in those maps, just like any other map in the game.
“Life’s a journey, not a destination.”
In the maps you won’t lose anything except having to get to the WPs again.
Storywise, if you only do LS2 on one alt you’ll be missing out on easy collection of a number of carapace armor pieces since several of the chapters let you get the armor box every time a new alt completes the chapter and you can pick an armor weight you haven’t unlocked yet.
If you want Luminescent armor, you’ll have to go back through the story on alts that did it story mode so you can do the achievements; those only unlock on alts that have done story.
Thanks guys.
As for the armour parts, I already have nearly all 3 sets without repeating the story, but thank you.