Aquascaping -- Underwater Ikebana?
Very cool, Figgy - I think you should go for it!
Being new to aquascaping and trying to develop my "eye," not to mention my skills - I'd like to take a crack at my initial impression...
I really dig the bamboo. However - I'm not overly thrilled with the plants used. I think the bamboo has a "density" that would be better served by more delicate plants, if that makes any sense... I'm not about to start recommending any at this point - more research first! But I would lean towards plants that would subtly indicate more "movement." Maybe some vals or sags - willowy grassy looking stuff of different heights. I like the Hygro, but maybe not so much of it. The crypt to the right of the little river looks almost as if it was abandoned there... I do like the little "river" off center. I don't really like the choice of gouramis either. I love them, but they aren't working for me in this aquascape. Of course - I am not up on my Asian backwater species of fish OR plants - I'm only sharing my visual impression.
Anyhoo - that's my take on it! I like the idea and I would like to see what you do with it, Figs!