I would like to see (hear?) audio programs that give us listening practice using all the words introduced in the lesson series (and maybe all previous lesson series) to that point. Maybe one audio file every five lessons, (The more the merrier!) emphasizing the most recent words, but using as many as possible.
I enjoy the podcasts and appreciate the background, cultural insights and grammar explanations, but once the lesson is over, it's easy to forget the words without repetition, repetition, repetition.
I finished another course which didn't have these features, but did have the repetition from various angles, and gained quite a bit from it, but I decided to start from the beginning of your program and became a Premium member. I've picked up quite a lot of information, but would like to hear it applied more than just the conversation snippet provided in the lesson.
We need to hear the words in different ways often enough to learn to recognize them as a concept instead of trying to translate them into the English equivalent.
May I suggest a series of phrases using the words in different ways and different conjugations like you do in the podcasts: Normal speed phrase, slow speed phrase, with translation, and normal speed phrase. Keep them short to start. As it progresses, make them longer. Maybe use a story or article. Make them about the same length as a typical podcast.
Studying alone, we don't get to have the interaction that would be available in a class. Attempting to listen to Spanish language TV or radio gets us lost very quickly, as there are so few words we recognize, and they come so fast. A more controlled feed to practice with would go a long way toward filling that void.