Weekly Improvisation Prompts - Good Idea or Not?

In my never ending attempt to add value to my piano lessons site, I came up with this idea. Actually, it's not new. I introduced it a while back.

Basically, an improvisation prompt is something that will get you to the piano and playing "without thinking" too much about it.

Writers use them all the time to jump into the writing process. The good news is, we muscians can use them as well. Here's a sample of an improvisation prompt:

"Create an improvisation using Open Postion Chords from the book "New Age Piano Made Easy." Use these chords only - D Maj. 7, G Maj. 7. Use only the tones from the D Major scale to improvise your melody. Play for at least 3 minutes."

This is just an example, but you get the idea here. Is this something you might be interested in receiving on a weekly basis?