Walking in a moving ship is totally possible in unity. It is already happening in a way. The camera moves when the spaceship moves and it is quite independent of how the ship moves. In Unity the camera , like the character , is a game object. The player needs to become a child of the spaceship ,which will give the player the ability to move around. It feels like Elyon is struggling to keep or hire developers. Things like crouching, and turning radius of the bike can be easily fixed. Also the third person controller feels very amateur.