Yes, I know one can come close to building this but …
I would like to see a view in which the basic forms of the Bible - Hebrew, Septuagint/Greek, Peshitta, and Vulgate are side by side. The user should be able to choose the edition of each AND a modern translation. A tooltip or a bottom ribbon would display (a) morphology with an indicator of alternatives as in the word-by-word section of the exegetical guide and (b) textual variants.