I'd rather have Pouliot than Nichushkin for no other reason other than the Pens don't at all need another young RWer. The Pens have Sprong, Hornqvist, Kessel and Rust long term at RW, they don't at all need another young RWer. Nuke would become obsolete as soon as next season, when Sprong will be up on the Pens full time.
The only way I'd trade Pouliot is if Schultz shows he can be a 2nd pair D this season and the Pens can get a high potential LWer for Pouliot. Otherwise, it doesn't make sense to trade him. I'd rather have Pouliot and run with:
Dumoulin-Letang
Maatta-Pouliot/Schultz
Cole-Schultz/Pouliot
As our D for the next couple years than trade Pouliot for a guy we won't need within a year.