I just flew with a LCA at my airline and he had an interesting thing to say about the lack of pilots in the pool to be hired by the Major Airlines. He said that he has a good friend within our hiring department who told him that there is only about 28-36 months supply in the hiring pool to be hired by the Major/Legacy Carriers. His friend says that there are several issues powering this, such as the Military is not supplying many pilots and there really is not that many in the Regional world. This is all based upon current models for being qualified and competitive.
I also had another LCA (who did my IOE), tell me that in a check airmen meeting, they were being told that it wasn't going to be long before my airline was going to have to start looking at CFIs to fill positions. I did not think that things were moving this quickly.