I usually don't do this, but I have no experience modding Bannerlord myself and just no time whatsoever right now to dive into that.

What I always wanted in Bannerlord, was the ability to have a smithy in castles, instead of having to go to towns for it.

Ideally, a smithy would be an upgrade you would have to construct - but I assume this would be rather complex considering the menus and code involved.

A simple mod that just adds smithy-access to any castle's menu would suffice.

Could someone do that, or would know how-to?