Cyber we currently use those iirc
We do, or something pretty close to that.
I don't think most people have seen my proposals which are at the end of last page so I'll repost them here:
My first proposal is basically concerning Liltotto Lamperd and how her current rating affects other characters.
Yhwach's Auswahlen is, as far as I'm aware, accepted as Sub-Relativistic+ and Liltotto's Vollstandig Form is accepted as being Sub-Relativistic+ for dodging out of the way of it.
Base Hikone scales to Liltotto from this.
And Candice Catnipp, Giselle Gewelle, Meninas McAllon and Shinji Hirako are all scaling to Sub-Relativistic+ via scaling to Hikone.
There are two issues with this to me;
1) We don't know the distance between Liltotto when she started moving and the Auswahlen; you don't need to be as fast as something in order to dodge it. The Sub-Relativistic+ rating should be removed from her Vollstandig key and she should just be rated as "higher" than her base key.
2) This was a feat performed in her Vollstandig form which she lost access to; Hikone shouldn't be scaling to that value through scaling to her base form in the novel.
This would bring Candice's ratings back more in line with her portrayal in the novel where the statements for the speed of her attacks comes from.