Lose the top row of the 100s and spread the lost revenue out across all ticket sales in a price increase. That wouldn't be a crazy hike.
Take a look at scoring in the WCs, WJCs, GHT, WJSS, and any other IIHF game where you've got big 5 teams playing each other. Look at SHL scoring. Lots of scoring, easier zone entries, better offensive zone possession. Unless you're a hard-core old-time hockey fan, it's fun hockey. If owners are looking to expand their fanbase, which is a much better way to add revenue than just ticket sales, then their on-ice product needs to be maximized. The NFL knows this and adjusted their rules to make passing easy compared to 25 years ago.
The NHL can tinker with goalie equipment.... it won't make the splash they think because goalies are bigger and more technical than ever.
The NHL tinkered with penalties, and it made for more power plays and hence more scoring.
If the NHL wants better 5v5 play, they need to go to a wider ice surface.