Answering your second comment first, to make the original language display first would create a standard interlinear.
As for the first point (inhibiting familiarity with the original language), I teach a course on using original language tools to those who use only the English Bible. It gives the students a taste of the original without requiring them to learn another language. Learning Greek and Hebrew is preferable.
Can that be done in Logos, ie, making the reverse interlinears appear as standard interlinears? Is there a true parallel of the MT and LXX?
I agree that interlinears can be useful for introductory students.