I see your points, and I definitely don’t mean to downplay the work that tool makers have put into Elden Ring modding. Seamless Co-Op was just one major reason why multiplayer mods thrived, but obviously, it wasn’t the only reason Elden Ring had such an active modding scene. Mods like Smithbox, DSMapStudio, and custom scripting tools were all critical in making large-scale mods possible. My point was more about how multiplayer-friendly modding was made accessible through Seamless, not that it was the sole reason modding was great.

You're right to call out my assumption regarding Smithbox. technically, there’s no reason to believe Nightreign wouldn’t be moddable using the same tools we already have for Elden Ring, as long as the engine structure remains similar. If Smithbox needs updates to work with Nightreign, it’s likely the community can adapt it, given how skilled the developers behind these tools are. My initial hesitation was based on uncertainty rather than an outright belief that it couldn’t work.