I agree. And- don't drop Kassian, as he's currently seeing big minutes alongside the Sedin brothers. Maybe Gagne- if you're not hurting on offense. But, with the Pens wanting to go far with a solid, winning record, they probably wont play Vokoun often, if only to give MAF a night off every two weeks, etc. Loungo is playing better than Schneider right now, and is seeing his 3rd straight start.
You probably do need help in goal, but I don't know that Vokoun is going to get more than 40% of the starts for PIT. I would probably hang on to Lou for now and see what happens. I don't think he will get fewer starts than Vokoun, and if he gets traded you could win big.