Spoiler
Hiya,
What I think is that we should get Professor Longbottom involved for a short while. He was teaching herbology, after all. So, maybe he could give the students the idea of the room of requirement. It would make a great escape tunnel. Everyone would know about it, of course, either from the DA or from the escape in the last book, so they couldn't use it as a hide-out for long, but it would be a good way to make it out of the castle and set the scene for the rest of the SB. What do you think?
What I think is that we should get Professor Longbottom involved for a short while. He was teaching herbology, after all. So, maybe he could give the students the idea of the room of requirement. It would make a great escape tunnel. Everyone would know about it, of course, either from the DA or from the escape in the last book, so they couldn't use it as a hide-out for long, but it would be a good way to make it out of the castle and set the scene for the rest of the SB. What do you think?

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But I got everyone together and into the room. (everyone with a profile, that is.) Onwards and Upwards!