Looks like a cute toy.

Simple enough to turn an LED on and off? Sure...

Now on another thread I posted an example to DIM three LED's ramping them up and down across a couple of seconds like those cheapo Christmas lights do for each of the three or four light chains...

I can't see somebody doing that same simple application easily with the Visualizer without a great deal of pain and suffering...

...hmmm... sounds like a fun thing to inflict on somebody, stand back and watch...

But on a serious note, anything that helps someone achieve a goal is a good thing - it's not my "cup of tea" though.