I don't get the hate for diving. It's a legit strategy.
Say there is one minute left in the game. Player A dives and draws a penalty. A's team scores on the PP and wins the game. Why shouldn't Player A be proud he helped his team win.
Goalies (used to) get their skates sharpened to give their guys a rest after an icing. Announcers laud them for their 'veteran play'. Before the delay-puck-over-glass rule, guys would dump the puck over the glass to get off the ice. A whole bunch of defensemen blatantly cheat and "accidentally" push the net off when the other team is on the offensive.
There's a lot of grey-area cheating that takes place. But the outrage is almost entirely directed at diving.
Aside:
IMO, the biggest instance of cheating in the NHL is the net being pushed off. There's an easy low-discretionary fix for it: if the defending team is the primary cause of the net being pushed off, 2 minute penalty (e.g. a backchecker who slides into his net). If it is intentional, penalty shot.
With diving, the solution isn't fines. The solution is creating a system where diving isn't rewarded. Right now, diving is USUALLY called in conjunction with a hook. So, there's NO DOWNSIDE to diving. Sometimes you draw a penalty, sometimes it becomes 4-on-4. Right now, you'd be stupid not to dive at every possibility. You're getting your team free powerplays! (Similarly, you'd be stupid not to push the net off every 5 seconds if you're nursing a 3rd period lead)
NHL:
You don't want guys dumping the puck over the glass? Make a penalty for it. You don't want goalies getting their skates sharpened? Ban it.
Diving needs to be disincentivized in-game. Stop making even-up calls. Make diving a 4 minute penalty. Attach a 10minute misconduct with it. Invoke automatic reviews and suspensions for repeat offenders.
The problem in all this:
Diving is very subjective and difficult to call correctly in game. Referees don't want to make incorrect calls. A player who loses his footing shouldn't be punished. Here in Canada, people are innocent until proven guilty. An adage that follows is that it is better to let 100 guilty men run free than to incarcerate one innocent man. So we have to ask ourselves: in order to deter diving, are we okay with occasionally penalizing a player who trips and accidentally dives?
If we're okay with this, that's the direction we should go. If we're not, what we're left with is what the NHL is trying to implement: a review board.
In a review, it's much more likely dives will be properly identified. Fewer missed calls. But there still remains the problem of creating deterrence. A 5K suspension is a joke. Any NHL player would gladly pay 5K if it meant 2 minutes of PP time. I'm guessing James Neal doesn't give a crap if his name is plastered on a dirt sheet, either, if he gets to score a PPG. There needs to be some in-game repercussions, that affect the W-L columns. A one-game suspension makes the most sense.
tl;dr: Don't hate the players who dive. Hate the institution that rewards and encourages it, and tell them to change their rules.