Hi Mauro! I love that you have your kids on here too, what a great idea! Now that you mention this, I have a 7 year old daughter I think might be interested in Asana.
So far as I know this is the official place to register suggestions and vote for them. So I guess get your Asana friends and kids to make some noise here on this thread too. If Asana sees enough support for it, they put it into their work queue.