You made several solid comments about where DL could possible go - almost all of which I've posted for a while now.
DL could greatly benefit from bursting out of its own bubble. I've been wishing for a large-scale trilogy of the companions making a chron jump. Endless possibilities there.
And also more casement jumps, like Shadow World.
Hopefully, sooner or later, some writer or writers, along with Gold Eagle editors, will listen.
But I wouldn't hold your breath...