I realize this game still is in ea, and game balance and content is subject to change, tho i do have a few suggestions.
I've sunk about 40h into this game and enjoyed every hour. As i get closer to the center of the galaxy, i do feel that things progresses to rapidly. When you started out, it felt 'big' to go from iron to titanium. Progressing further, it just felt like i hardly had time to finish building my titanium ship, when it was time to upgrade to the next tier.
The game is built on procedurally generated content, i think you're a bit too generous at dishing that content out. To the point where you stop caring.
Hence less is more in the topic. I think, slowing the pace down a bit would benefit the game. For example the sheer number of factions, make you not really care about any one faction. If you bump into one where your rep is too low, you just warp a few times, and you'll sure met another which you have better reputation with.
I think reducing the number of factions in any given game by 50%, and increasing the average faction territory by 100% would generate a more enjoyable game pacing.
It would also make it feel more meaningful improving your rep with the factions.
The same could be said for events and sector features. E.g pirate ambushes, sellable asteroids, scrapyards, turret factories, stashes and so on. If these were more uncommon, it would feel 'bigger' when you did find them.