Lots of good stuff revealed in that, the switch skill swap thing sounds like it'll add a lot of depth, although I feel like I'm going to end up forgetting it's there half the time
Follower quests sound like they could be good fun too, it'll be a nice way for people to get a taste of the multiplayer experience even if they tend to play offline.
I feel like there's a fair amount of 4U influence in Sunbreak given Seregios is back, Malzeno has a very Frenzy Virus-sounding mechanic and I'm like 90% sure at this point that Minayle is grown-up Little Miss Forge. (Which is always a good thing because 4U is best monhun)
I'm wondering if maybe the different environments of the castle region could also link into an Everwood-style randomised hunting ground as well?
Also I'm claiming magma almudron as another box scratched off in my prediction bingo