I am sure they will put Max 7s on Hawai'i and Alaska, but the whole Denver dream of the nonstops is exactly like the 787....a rumor. Hawaii is low margin intense completion. United has multiple 777s in high density configurations going there every day. Those things are profit machines and United has the legacy hub ace of spades of tons of regional and mainline feed going to a high density heavy aircraft doing the long leg. They aren't going to sit back and let that go. They will undercut and wait while we bleed. There is a reason why most of our HI flying is from low competition airports where we are the dominant carrier.
Max 7 to HI is going to be great since now you will have 150 seat planes doing low load inter island in between crossings and more max 8 freed up to do the crossings. I don't think it's going to open up any mountain time zone Hawai'i flying, though (PHX notwithstanding 4 months of the year).