I haven't tried this form yet, but I hope to make some time this weekend to go to town. I find the similarities with the villanelle format intriguing -- it's like villanelles are a much more rigid version of the same thing.

I hadn't thought of categorizing rhymes as vowel versus consonant, stressed versus unstressed, but the divisions sound fairly intuitive. Would the examples given by, say, the Wikipedia entry for 'An Introduction to Rhyme' match what you're talking about?