I saw a post that was 'we know Jason Todd is a fanfic author, but what if Dick Greyson was ALSO a fanfic author and also ghost wrote endings to Jason's Fics when he died as a coping mechanism' the other day, and I can't find it now but I would like to add:
Dick waking up the morning after one of the big Fanfiction Purges and finding out all his dead brother's fics were deleted with no backup to speak of.