It’s an iffy proposition if you ask me. Sure, they may take a bunch of penalties and help out your team, they may also Matt Cooke one of your best players before they get kicked out.
Matt Cooke is an entirely different entity. Rats like him and Marchand do their work rather sneakily and then dart away before anyone can come after them. I'm pretty sure Cooke hardly ever got kicked out of a game. He never lost his cool, just took guys out and then slunk away to the next target.
Tom Wilson is a wholly unique sort of monster as well. He's a lethal combination of rat, goon, and top line power forward. Dude's a freak.