Now that I have this hex grid thing (and units), I'll now make the units start distributed on the ground.
Then when that's done - I'll switch things arounda bit. I want the player to start with a galaxy view, with planets. Then each planet has their own generated hex grid.
You then start on one of the planets, and units are placed there.
When you click the planet you should see the hexgrid for that planet, and when you got to the other view you should see the planets (also procedural).

As for gameplay - I want you to start stranded on the first planet, then work it all the way up to being able to have a colonizer ship (with lot's of things having to happen before you can build that), and once you have that then can use to colonize another planet and then work that one up as well etc.

But first things first - place some units, then add planets and their procedural landscape.