Ok, i want ideas for an EV Nova plugin. No new missions or anything (yet) just add a few planets and systems. And mabey some weapons and outfits. I know how to use missioncomp, but i need ideas.

Look around this board and the Addons page (should be a link in one of the stickies) for inspiration, fiddle with Mission Computer. But you're not likely to get much of a response here with such a general question.

If you want to create new planets and systems, you should give some thought to where in the EV Nova universe there might be room for planets that no one knew about before, and why they went undiscovered for so long. Who eventually finds them, and what do they do about it? Once you know a little about the world you want to create, the rest often fills itself in much more easily.