I'll just summarize the responses for you here:
Crymson: "NO! The Wings are perfect and Holland had nice hair! They do not need a tough guy."
Konnan: "You're all just xenophobic euro-haters. They score plenty of points with 'soft-euros'."
Various: "Fighting in hockey is useless. You should just watch UFC, you don't even like hockey."
Holland: "The right deal just wasn't available, but we're confident that some players will take that next step..."
Pretty much it.

Anyways, in general I just kinda shrug at Don Cherry. Don't love him, don't hate him, he's just one of those guys that always has an opinion for better and for worse at times and I just kinda go okay. Sometimes he is spot on, sometimes he is way out in left field.
As for the forever talking discussion on this specific subject, do I think the team can use a guy who's main job is toughness or knuckles or dropping the gloves? Sure. Am I losing sleep over it? No. Do I think the Wings can do a better job of answering cheap shots or snowed incidents on Howard? Sure. Not losing sleep over that either though.
I like fights and toughness or whatever, but it's another part of the game, just like great goaltending or puckhandling skills/skilled goals, shut down defense, etc.
They know how to bring grit and work ethic with their current personnel, it's just a matter of if they can do it and outlast the other team for a full game consistently. If deals can be made to improve this teams via toughness/grit, I'm all for it but this team has close to the same roster than barely lost to a solid San Jose team in 7 games last season (with the welcome addition of better work ethic more consistently on 3rd/4th lines this season), with some puck luck or a few things different I like this roster's chance to at worst get to a Conference Finals as well if they can consistently bring the work effort.