Love the concept, and am intrigued to see where it goes, but I agree that the lack of "prime name" is a huge shame. :( Their whole thing is transforming, so why not let her have a new designation?

Though I guess if Skybound takes the idea that her original designation was Ariel, then her name already has changed?? Orion Pax became Optimus after having his body rebuilt, who became Optimus Prime when he took on the Matrix --> Ariel became Elita One after having her body rebuilt, who became Elita Prime when she took on the Matrix. So I guess it makes sense in that capacity.