The answer is job creation. That is a REAL economic stimulus program based on economic theory.
I'm not sure why you want a HARP 3 or how you think it might be defined differently than the current program. It would be interesting for you to elaborate on what you are thinking would be better than the HARP 2 is.
I, for one, hope that we get real recovery and not another illusion. It helped some lower their interest rate but wasn't a solution.