I think in today's day and age it is all about online gaming. While we get by with with an ancient emulator that hasnt been updated in almost a decade (GENS), online play could be much improved.
A PC or console based NHL94 release with online play similar to what we have in NHL2015+.
- Season mode
- Detailed stats
- World rankings
- Original ratings for NHL94 mode and updated rankings with new rosters and new teams including roster patches etc.
- Slightly updated graphics (see Crossy Road for AppleTV, still pixelated and true to the roots but much more HD)
- New music in game
-Little changes like - fake slapshot, lifting the stick, hip check. Overall though the gameplay needs very little changed it's more the peripheral features which are lacking.