Ask HN: How do you deal with feature creep in your side projects?

I have some sort of a website that's been in "beta" for over a year and I'm really struggling to draw the line somewhere.

There's about 20 features I want it to have, at least half of which serve some sort of a very specific niche that I could easily see attracting some returning visitors (might be dozens, might be thousands). I've almost finished about 5 of them, but instead of finishing them properly, I'm really struggling to limit the scope, release what I already have, and then build additional features on top of a somewhat solid foundation.

At this point I'm kinda second-guessing will I ever even release it, which I think is a shame. I feel very confident in saying that what I have now already stands out in comparison to my competition. I'm also confident that I could easily attract some sort of an initial audience, very cheaply in comparison to most other fields.

Any words of advice? Recommended readings?

I should point out: I'm not in it to make money, I don't want to turn it into a startup (at least not now, without some already-established audience), and while I like to dream about quitting my (unrelated) job, I'm completely fine with it operating under perpetual loss. At the same time, I'm scared I'm gonna throw more money into post-release marketing than I realistically should, which is definitely a whole another reason why I keep justifying perpetually being 95% ready to release... some version of it. Any version of it, even if it's less than what I already have.