I'm not giving my opinion as to whether things should or shouldn't change but if you want it to change then you need to fix the officiating first. The league has repeatedly set a standard for what they'll allow. Punches after the whistle, slew foots, repeated cross checks in front of the net, wrestling after the whistle, cross checks to the back when someone is on the ice, face washes, you name it... all of this is seen as just "part of the game." The DOPS said as much when they issued their ruling on Wilson; they said that wrestling with Panarin was something that happens every night multiple times a night -- that is the root of the issue. "What you permit, you promote. What you allow, you encourage. What you condone, you own." The league permits all of this stuff and then people get big mad when players cross an imaginary line based on arbitrary interpretations of the rules and "respect" for the game.
The natural progression of things is that all of that extracurricular stuff is now part of the DNA of the game. There's no clear standard for what is a penalty and what isn't and refs are (admittedly, in some cases) managing the game by calling some stuff and not calling others. DOPS and supplemental discipline is secondary to establishing what the league will allow and getting consistent enforcement of the rules on the ice.