fandom convergence

So I was pondering the 'aliens, demons, superpowers' challenge for the Brush & Lantern community. Also I'm going hiking in less than two weeks. And my brain was moseying right along on these two tracks, when suddenly it hit me:

*aliens
*mountains
*spaceships
*maps
*twins with cool powers
*a journey
*older, adultier adults who say cryptic things

Guardian fandom, where are my eleventymillion Escape to Witch Mountain AUs???