The NHL isn't going to make the rinks bigger. Do you understand the cost that would be associated with this and the subsequent loss of revenue? Not going to happen.
Some equipment could stand to shrink. That would probably increase scoring.
The ultimate solution? Time. Players will eventually figure out how to beat the butterfly goalies of today. Back in Roy's day, more goalies played a stand-up style. Give today's trend time and players will figure out how to beat it.