Well, yes: I was wondering what comes in week nine, because I'm 'stuck' developmentally. I know basic principles. I'm out of my depth at milongas. But there's nothing in between. Well, not nothing, but you know ...
I agree with dchester that after there comes repeating this maybe once or twice, and then themes workshops of 2/3 sessions introducing: wraps in all their forms (ganchos, enganches, inside, outside, right to right left, left to right leg, and so on), saccadas and off axis work, milonga, vals, specific orchestras, variations on ochos, variations on giros and so on, chained into more or less or coherent series, depending what the students seem to be enthusiastic about.
And i have to admit that i also am not sure what a intermediate dancer should do, besides going to milongas and continuing to do classes/workshops that interest them.
My personal approach has over time become that after knowing the basic vocabulary the key is to go dancing at milongas. I think it is really just miles on the dancefloor, and trying hard to be honest with myself and taking every tanda seriously. For me it became an exercise in cutting everything i could not dance at a milonga out of my vocabulary, and waitng for the experience when one of the fancy moves that i had seen and worked on in class and at workshops suddenly appeared effortlessly out of seemingly nowhere. I often have to fight the temptation to tell beginners who ask about specific patterns that it is to early, and that it will all make sense later. I often feel that people trying to emulate a specific expression of underlying technique without being comfortable with what the technique actually is activly hinder their understanding of the technique. My favourite example for that is ganchos - to do a gancho one should have perfected the exact placement of the followers steps, continuous connection through turns by dissocation, and non-inertia and complete relaxed hips and legs of the follower. I.e. once ochos and giros are completely understood, ganchos easy. If they are viewed as something fundamentally separate it makes it harder to find the flow between movements.
So, i think after the basics comes the milonga. Studying the connection and geometry of the things i think i know till they work under pressure, from any angle, and so on. And this can only be done by repeating them 10.000 times, with different partners, on different floors, with crowds of people in the way, using them to tell different interpretation of different pieces of music to followers who have different interpretations of the music themselves.
Gssh