Hello from germany,
just visited the products page, demo and parameter documentation. As far as i can see, you covered almost any option one may think of Though i am not sure if i missed something like this...:
Tab ordering & activating
Do the tabs always appear in the same order? It would be nice to have a random order, so the initial tab content is not the same... at the moment, the user have to click another tab, to see the other lists. All tabs might have the same "importance"... but the first is always the "hero".
Optional or alternative to a random order:
An auto-switcher with adjustable time-interval. If it does not require too much scripting etc. This would help to spread the focus on all tabs equally.
Another "little" usability option could be a mouse-HOVER for tab switching...
And as always An option to turn-off the modules own CSS styles. So, advanced users can put their own styles in the main template css file. (already mentioned in another topic)
Thanks for listening.