There is an ideas list specifically for Photoshop Touch for the phone. There are a couple of ways to find it. You can look at this pod on the PS Touch - phone forum main page:
As you see, the pod contains the most recent ideas that the community has posted. It also contains a link to the entire set of ideas. Click Show All to get to those. PS Touch for phone Ideas is where people can vote for their favorites and submit new ideas.
This sounds like a great idea, you can post your own idea by going to New > Idea.
please let me know if you have any problems.