Please, pretty please with sugar on top, also add the ability to delay the subtitles!
From listening to a lot of Pimsleur I know that, for me, anticipation and correction is one of the most powerful ways to learn a language.
I'm pretty sure that listening to a dialog, trying to work out what is said and being corrected a few seconds later by the actual translation would have an amazing impact on a lot of people (although it might be a bit too hard for beginners.)