I would love to have a good Chinese-Chinese dictionary as one of the dictionaries. If you needed a recommendation on a good dictionary, I could recommend one, but it looks like you've done a good job in finding the NWP and ABC dictionaries. If Plecodict included a Chinese dictionary, I think any Chinese teacher would have no choice but to force her students to buy a PDA and Plecodict.
I didn't put this post under Plecodict because I also have a second idea. How about discounts on the paper versions of the dictionaries for those who have bought the electronic version? The NWP dictionary looks like it would be fun to browse through. And it looks like it would be hard to pick up a copy of it unless special arrangements were made. But I don't know if there'd really be much interest in this.
I didn't put this post under Plecodict because I also have a second idea. How about discounts on the paper versions of the dictionaries for those who have bought the electronic version? The NWP dictionary looks like it would be fun to browse through. And it looks like it would be hard to pick up a copy of it unless special arrangements were made. But I don't know if there'd really be much interest in this.