I agree that adding those feature would attract a wider audience.
I love the way you teach your little treasures. May Allah bless them. Translating the whole series is a real challenge! Obviously, teaching Qur'an is the priority, so you made the right choice
And what about the Noorani lessons? I am so keen to help you! How are the LR files that you've been doing? Can I join you and make a team? (since you have the permission) I am about buying the book you recommended but without the CDs as I have an excellent iPhone app called "Easy Quran". It is much cheaper than the CDs: $6.99 only. Plus, my toddler enjoys tapping on the screen and listening to the pronunciation again and again.
So if you still need help, please let me know.
Salam