Might it not just be that they are trying to space the class reveals out a bit? We still have (at least) 2 more houses to show, consisting of 14 students.
Let’s say there are 8 starting intermediate classes in the game. We’ve already seen mostly intermediate classes in the Blue Lions reveal. It would get boring pretty quickly if we only see the same intermediate classes for the Golden Deer and Black Eagles.
I think we’ll start seeing some advanced and master classes for the next 2 houses’ reveals. That doesn’t mean they’ll start out as Wyvern Lords- the characters will probably all start out in intermediate classes. I just think Koei are trying to showcase more of the classes to maintain interest.
