User blog comment:D Man o3o/Rumor: 7 Star SBS Unit Info/@comment-50.53.5.23-20150716131404

There isn't really any change to the units... The pattern with 7*s so far is that their 6* SBB is their 7* BB (prob a bit better) and their 7* SBB is a complete upgrade or change. Ultor, Tridon and Hadaron are basically the same units as before but with slightly better versions of their already existing skills. Andaria and Zedus only received a random new buff yet still have basically the same BB and SBB as their 6*. Aurelia on the other hand was a better representation of a 7* evolution but she has a completely broken ability that would never be implemented by Gumi because she would be in every single squad. There would be no reason to not put her in a squad and Gumi doesn't want people to just have the same units every squad. They want to see their players build new and interesting teams using different units. That's why there's so many units to begin with. With a buff like Aurelia's, there would be no diversity in squads.

TLDR:

Ultor: Not really worth evolving, use those materials for someone else

Tridon: Same ^

Hadaron: ^

Andaria: ^

Zedus: ^

Aurelia: You would be stupid not to evolve her if this existed... Would end up being in every single squad reducing diversity in players teams. Gumi prob don't want to see that.