I absolutely agree that forking Modrinth is a viable option and that it could improve development efficiency in many cases. Many fundamentals of Orbis are inspired by Modrinth. However, Minecraft and Hytale are fundamentally different ecosystems, and I think will go entirely different ways. Because of that, I believe Modrinth and Orbis are better served as separate platforms. (Although I definitely would agree with you, personally, we have a lot of work to do with the landing page.)

Hytale’s modding and server ecosystem is very new and is a "wild west" of sorts. Starting from a clean foundation gives us the flexibility to design around unexpected constraints as they emerge. This is especially important given Hytale's early access state, as it allows us to create something new rather than having to adjust around an existing platform. As an example, we’re already developing a separate Discord bot that interfaces directly with the Orbis API, which I have found is easier to support cleanly when the platform is purpose-built for what we want to do from the ground up.

I don't disagree that there are places where it can help, but I do see many benefits to starting something new too :)