In relation to Meg and Simon, I thought this was a very fitting end to the Others' books that center around the Lakeside Courtyard. (Though, I'd have loved just a bit more with them there at the end. Just a little bit, at least.)
I know the author is continuing the series by setting the following books in different locations, and I am very glad about that. I love the world this author created and look forward to reading more about it. That being said, I am also quite sad because I've become quite attached to the inhabitants of the Lakeside Courtyard and am not ready to move on from them just yet.