I'd be nice to have the option to do voice exercises only for a whole session. That way we could practice while walking on the street or driving without having to be looking at the phone all the time :D
More generally, it would be nice to be able to pick a certain kind of exercise. The hardest for me are translating to the language (in my case, English->German or English->Spanish). When I can do those, I know I have the words down.
Thumbz up! I've been thinking about this since the day zero, and thought this is such an obvious feature in the modern mobile world that it has to be on it's way. But no news yet at all. So here comes my cheers! I want this!