I cannot say what anyone should or should not do. However... Personally? I am not a fan of time travel scenarios. It usually presents too many issues, like god-modding (that could very well be unintentional). Unless the lore supports the notion of lots of people regularly going back and forth in time like it's no big deal, I find the idea of time travelers odd. (I know there are the Warriors of Light... But that event is NOT a common occurrence.) It typically comes off as lazy (and/or clichéd) storytelling to me.
And for the particular case presented by the OP, it sounds unnecessary. You can just change the backstories/character concepts in order to establish whatever relationships you want. Nobody should throw a hissyfit if you retcon things.
And for the particular case presented by the OP, it sounds unnecessary. You can just change the backstories/character concepts in order to establish whatever relationships you want. Nobody should throw a hissyfit if you retcon things.
