I did some digging into this Premium Plaza, soooo:
- There are 22 new Plaza Tickets and so presumably 22 new hats.
- Birthdays are added, each Mii you pass has their birth date registered on a calender
- Filling in an entire month rewards you with a Plaza Ticket...
- ...so you get 12 from the Birthday Calendar, meaning the two new games must have 5 each
- You can move any Mii into a special VIP Room where they'll never be deleted
- You're free to choose between the 7 BGM themes
- You can also listen to unlocked music in sleep mode with headphones
- You can choose which information to omit when you meet Mii's, speeding up the whole gate greeting sequence
That seems to be all of the changes.
Seems a bit weird to be a paid update, no?
TBH I'm not sure how feel about this. Since I started playing Monster Hunter 4U I barely quit out of that software, let alone take the time to go through my streetpass que. My free time is fairly limited at this moment in my life, so I'm a lot more deliberate about how I spend my gaming time.
That said, I'm pretty positive that I won't be able to avoid the addiction that is Streetpass Plaza. And I'm already coveting those new hats (Splatoon!).
Ha you sound just like me, I've just hit G-Rank and my every gaming moment is consumed by Monster Hunter... but I've got a serious weakness for Streetpass and its hats!