Ideas for fan fiction stories

[Izargon]

So, perhaps this is not the best place for such discussion, but I find this series to be relatively similar to that of Fallout.

One idea, is dropping most of the characters into a fallout universe and progressing along those lines.

Or another is where Institute starts a time travel sort of thing not unlike Clannad, and one of those universes happens to be Grisia...

Just ideas after all.