Make spaceships available earlier and cheaper for players using the Space Exploration mod
Small changes concerning balance, gameplay, or graphics.
Transportation of the player, be it vehicles or teleporters.
Augmented or new ways of transporting materials - belts, inserters, pipes!
I haven't been able to play yet, but this is something I've wanted for a long time - I never got to the spaceship tech, but always really liked the idea of building something instead of just loading up (basically) an oversized chest.
Designing and flying spaceships is my favourite part of the SE mod!