Although, I live in a Mandarin speaking environment the opportunities to exercise the full range of my developing vocabulary are limited. Either the conversations escalate into vocabulary realms beyond my comprehension or (most commonly) conversations are limited to the same vocabulary word set - day after day. So, I use RC as my private tutor. RC knows my vocabulary and has perfect enunciation, and this technique of utilizing a significant portion of my vocabulary on a daily basis is working for me.
This leads me to a suggestion for a third Chinese language course and that would be a "private tutor" program. What I suggest is that a thematic lesson of words, phrases and sentences be constructed and allow the entire lesson to be played without the listener having to interact - no mouse clicks required. The student could read along or not. If this automatically played lesson could be custom adjusted (for example, options to 1) replay the lesson upon completion, 2) control time of delay between words, phrases, and sentences, 3) control the number of times each word, phrase, and sentence is repeated, etc.), the learning experience could be greatly enhanced.
The RC libraries already contain a significant amount of vocabulary that could be used to constitute these thematic lessons.
Thank you for your excellent program and the language skills that you have provided.