This is sort of why i never understood all the guys on various forums saying that if Hussie doesn't keep the recent deaths permanent all drama about people dying will be lost and the comic will suck. We have already known that there are a ton of ways to resolve this problem. To simply keep them dead would just be a huge plot hole as we remember that even with the situations the way they are they have a ton of ways to bring them back. Death was never a final thing, the only real final destination is the universe ending.
And like in Descend with Jade sacrificing herself to save John, knowing Jadesprite will come and that Jade did it because she knew she would die and be stuffed one day didn't really make the whole scene any less powerful to me. The core element, the thing that made that scene great to me was the same thing that makes me love all the kids, especially John and Karkat. They are good friends. And not even in the sense of their relationships being good, they are people whose attitude and determination is set on seeing their friends survive. Even Terezi, with her stone-cold ways and playing around with Tavroses body is showing that aspect. This is probably also why I hate Vriska so much, but I won't dig deeper here.
Basically, there are elements here more important than the drama of death. Hussie can cheese death as many times as he wants so long as he keeps what makes these kids great here.