Thank you for interesting at TeamPulse.
We can split your request into two.
About the automatic creation of iterations, I've added an item in our Feedback Portal, so you can vote for it.
As for the other request - moving all unfinished items into the new iteration, the most similar request we have had is this. We believe that moving items between iterations should not happen automatically and should be conscious decision. We encourage people to take time and discuss what was finished and what is left to be done in the new iteration.
If you have any other questions do not hesitate to contact us.