I say New Game Plus, but all I would want is the carrying over of skill points.. As carrying over items, blueprints, and equipment would break the game...

Plus it'd be nice if you were able to max out the skill tree (without going on the second easiest difficulty.) if you played on new game plus.

I really wanted to play on a harder difficulty, but the additional skill points were too tempting and I ended up beating the game on the 2nd easiest difficulty, Only to find out there is no New Game Plus option,
And that the last 6 levels I need are incredibly grindy. easily 3-5 times as much xp as getting to level 24 or so..

And I already developed all the islands on the starting island, 2 planets in the Solar System, and every other single planet system.. So I really don't have much else to do..

(btw I'm playing on Xbox One. so no mods for me.)