First, I'm going to deal with Scales and MLC together.
What do you want to see happen in them? I have an ending planned for S&C, but I can fit basically anything in between since it takes place four years later.
As for Dangers, I won't spoil anything, but next up is Rainbow's Hall. There will be Wonderbolts, and I will be pushing the Sex tag in a very funny way to get past the darkness we encountered in Rarity's Hall.