Gorges is a fine player and good value at 3.9M. There's value in a guy who can play against very tough competition and keep his head above water, he plays very tough minutes and usually breaks even possession wise. He isn't going to put up points but that's something you coach around. The issue is the Subban-Gorges pairing means you have to minimize one player's value. If you give that pairing offensive deployment, you're wasting Gorges' defensive skill. If you use them as a shutdown pair, you waste the offense of one of the league's most dynamic players.
What I'd like to see is a competent right side #4 in Emelin's place to play on a shutdown pairing with Gorges. We did this to great effect early in the season, Gorges-Diaz took shutdown minutes and were very good until Diaz was press boxed and traded for no reason, while Markov-Subban dominated lesser competition. This is very similar to the way Chicago uses Keith-Seabrook and Hjalmarsson-Oduya to great effect.
I prefer the guy with offensive talent to the guy without it, but that doesn't mean offensively limited guys like Gorges are useless. He isn't Frankie Bouillion, Gorges can competently play against top competition as a shutdown guy and is an OK possession player in situations where most guys would get cratered. Sure it would be nice if Gorges was more talented, but if that were the case he wouldn't be making 3.9M, and he wouldn't have been part of a trade for Craig Rivet in the twilight of his career.