The Terezi that died is pre-retcon Terezi, the one that died after giving John the list of things to do

They’re mutants

Yes, you can have a matesprite and a hatemate and whatever else at the same time but not with the same troll. You can’t have the same person be your moirial and matesprit, they can only be one.

Dream bubbles are exclusive to dead sb/grub players

So many things, so many things I’m not gonna list them just for times sake. 

He always had it. Dude’s a purple blood after all.

Gave them a Green Moon, gifted the Empress with her lusus, raised the Handmaid and instructed her to instill violence into their society throughout history. 

Lalondes live in New York state, Striders in Texas, John/Jane in Washington state, and Jade/Jake live on an island in the middle of the pacific. If you want to be more specific check the wiki.

Sacrificial Slabs

We’ve seen it in hero mode and ministrife-sprite but not the average style, no