We've already had some good alignment debates, suffice to say, the concept of fluid alignment doesn't really track for me.
As for the 'importance' of a backstory, I would be careful here lest you have a party of level 1 characters with, what you might call elaborate histories full of feats and experiences that make no sense for someone struggling to tangle with some goblins.
Another less flattering D&D stereotype is the party of newbies with really try-hard backstories that throw a fit when they faceplant in the innkeeper's basement.
Last edited by Sozz; 16/09/21 10:33 PM.