You don't have to sell me. There is no question. The argument that bigger nets would mean having to scrap the record book is ludicrous. It is the cop-out of ridiculous, oldballs, afraid-of-change-no-matter-what, simpleton poops. If the record book has stayed valid through all the equipment changes up till now, why would one more be any different.
Just go ahead and make the goal bigger. Until it brings goals per game from 5.5 to, oh, say, 7. Hell it was almost 8 in the mid-80's.
Make it possible to score on a slapshot from the wing. People used to do that: score on a slapshot from the wing.
I ain't kidding neither.