But if there's an easier way, let me know.
To me the idea of being more transparent is like the idea of being more pregnant. Either something is or it isn't. If you're trying to rank something then ABX is the wrong tool.
More visibly pregnant, I guess? Problem is, the original A may be indistinguishable from B may be indistinguishable from C, yet C might not be transparent. “ABX and ACX” could be helpful then.
I'd also like to know if anyone here has ever personally been encumbered by knowing which codes were being tested while performing an ABX test.