I definitely have too many projects to tell you for sure. Just look at the two sites [1] [2] and you know what I mean. I have as many projects in the backlog as you can see on these 2 pages. And actually I don't want to concentrate on one. The motivation changes about every month, because I do this in my spare time. And from time to time a project has a status where I can publish it.
So at the moment my motivation for this game is to add more realistic physics for the ship (turns instead of right and left) and a level editor to learn Vue. Then just look at the other comments. You see a lot of great ideas.
But building a 13k game next year based on the Voxel Space Engine is also in my head :-)
[1] https://simulationcorner.net/
[2] https://github.com/s-macke/