Freezing is not a stellar anime by any standards.
But at least it does not try to be elitist or something it isn't.
It's a fanservice show, with simple shonen/seinen structure and a simple story line. Yet you can enjoy it for what it is for now. I had my doubts in ep1.
I'm just a little frustrated at Satela, she's a second character for now. But I understand that they have to give some flesh to other characters to try and build a storyline.

It was a bit surprising they used Satela's data. From what I remember, she is an odd one. Number of Stigmata, the way she was implanted and everything is non standard about her. She might just be you 6sigma kind of test subject that survived her stigmata and accessed a huge source of powers she only exploited to a bare minimum as of yet.
So it's a bit strange a scientist would chose that as a model, when Elisabeth and the others among the top seems to be "easier" models to apprehend from a scientific angle.

But again, that might be because it will give Satela a major role in solving the crisis, as she becomes defacto the only one to truly understand some of the specifics of the powers implanted in Gina. Or also she might be somewhat controllable by Kazuya's Limiter.