From my limited experience in this space: any two users typically have very different needs and want to see very different features (mobile? desktop app? themes? integrations? offline?) before they would feel comfortable making the jump.
So my hunch (although I hope you prove me wrong!) is that getting serious growth requires creating a lot of little features and getting all of them right. I found the prospect of this exhausting when I took a crack at it years ago.
On that basis, my feedback is that it would be great if you all decide what you want this app to be. If you want it to perfectly scratch your itch, that would be a wonderful thing, and I think you would see steady growth in a niche market. If you want it to grow massively, long-term I think it needs to be some kind of platform with a killer edge.
For example, I think Obsidian falls in the platform category. Its killer edge is a great UI over plain markdown notes just stored on disk, and it's also a platform for all kinds of extensions on top.
Also: charge more! [1]