Been following the games development for many years now, and have played several times each lasting some dozens of hours. I can see the game in its current stage still lacks key features even after 10 years of development (faction interaction, NPC interaction, game progression etc). I understand that the game is more of a passion project at this point now but that doesnt cover the fact the games still got huge potential (imo, on par with rimworld in terms of modability and replayability). Although it is currently a fairly niche game, its gameplay can easily appeal to a large playerbase.
Steam early access could inject some much needed capital, allowing the developer to outsource the visual aspect of things and focus on developing the game mechanics. The steam platform would also expose the game to a broader audience that would no doubt invigorate its modding community. Nonetheless, it all depends on where the developer wish to take the game to and this post is but a humble suggestion I have to the betterment of this game.