The endgame for Blue Star Rebellion is for it to wrap up in maybe five years, with a tangible hook through to the beginning of its parent story, Dragonfeathers. The story of Dragonfeathers will then eventually find its way back to the moment of that hook in its 4th or 5th arc.
As for Dragonfeathers, it doesn't have an endgame. I'm pretty sure I'll be inventing new stories in that universe my whole life. If I can't keep drawing them, I'll write. That said, Arc 1 of Dragonfeathers would be a good story for an animated adaptation, so the endgame for Arc 1 could be TV animation.
I intend to print all of these stories, initially on my own, but potentially through a publisher someday. I want to be able to hold them in my hands, sell them at conventions, and beat my friends and family over the head with them until they read them.
I do want to work with book publishers in the middle-grade/YA graphic novel world, so regardless of whether it's my own stories they're publishing, or if I'm being paid to illustrate the stories of other people, working within the publishing world is an endgame of sorts as well.