Considering the notion that the cap isn't going up much (if at all), there's no good reason to re-up either of these two. Again we have capable albeit inexperienced guys who can replace them at a fraction of the cost. And we'll still have Letang, Maatta, Scuds, Despres and Bortz in place. It's not ideal but that's five pretty solid pieces.
Absolutely right, we all thought that the Cap would go up and at least right now it does not look that way.
The Pens just won´t have the Cap to resign guys like that AND have a balanced roster. Harrington and Dumoulin will have to get time in the NHL this season to be ready for a full role next year. Not sure about Pouliot, but I guess the same can be said about him.