I see some very useful parts in these new sets. I’ll definitely be ordering from the parts department some of the huts from the zoo, some parts from the Mediterranean house to make a Roman villa, the desk from the advent calendar, the new bishop, and the market stalls from the other advent calendar, which could be used for both the Medieval and Roman themes.
I’m especially excited about some brand new items and item colors, namely the new grey chair and new color chest in 4866, the brand new helmets in 4867 and 4869, the new shield shape, the new arm armor in 4874, and all the new heraldry. Although I’m not a huge Medieval cannon fan, the ones these new ones look historically correct. I may end up getting both these castles, even though they don't look as customizable as the previous System X ones.