Fanfic ideas

Two fanfic ideas:
1. I have MLP AU in the works aka my mind about Twilight being Celestia and Discord`s daughter and Candance`s sister ,Luna is to married to sombra. Dont have a name yet. My ships.

2.The other one is about Celestia and Luna`s retired. Everypony is apanic after a deep evil coming to the world but Celestia and Luna have the power to stop her but they care about their retired more and think the mane 6 can do it but when they visit Equestria and saw the place in ruins.
Twilight ,everypony and others leave Equestria to start anew. The ponies and Twilight is angry at Celestia and Luna for leaving them and leave Celestia and Luna with their thoughts.
Can some people help me with them. :
Fanfics names
the new place
and more