I kinda wanna write about Lancer and Susie's relationship post-DR, but I don't have a lot of ideas, I have two current ideas (that are very similar):
-LANCER, yes, LANCER opens the old fountain. With the help of our good pal the knight, he's convinced that his friends will never return unless he opens the fountain. So, he cracks the seal. After being confronted by Ralsei because 'WHY' and because 'what the heck dude', he locks him away and basically becomes his father with the goal of bringing the lighteners back, becoming a real villain in the process. Simultaneously, Kris, ruiner of all that is good, either begins to head down to the dark world and destroy everything or refuses to come along. In both cases, Susie and a few other familiar faces have to save the day.
-On a similar note, Ralsei can't take the loneliness and waiting for the lighteners to return and creates not only a whole new LAND but a new fountain. All while at the same time, searching for his subjects. (Which, spoiler, are all DEAD. Like, dead dead.)
Non-Lusie stuff, you can look away now:
So I currently got a little story brewing up in the back of my mind about my two Jack's named Âme and Ruby. They're both in hiding together because of the whole 'OUR DAD'S ARE LOCKED UP AND THE KING MIGHT BE AFTER US' situation (despite how they'd be largely ignored like Clover). Ruby, a Jack of the diamond suit, is finally returning to her underground kingdom to attempt to recover what she can. Since Âme cannot return to his home, he comes along.
Both find out some secrets both kings kept, and eventually find out about Lancer's whole take over, and are split up on their thoughts over it.
So yeah I'm really scraping the bare minimum of this idea, but I doubt I'll ever write about it. But I DO got a lot to write about this (why the heart-kingdom can't be recovered, why Ruby is red instead of green and always wears a helmet, etc. Hmu if you're interested in any of this nonsense)