i think it's a good idea, with a disclaimer in the pinned post like "you're more likely to get help faster if you go to these places: (links to discord and reddit)"
i mentioned this in the main thread, but a subforum to post modding guides and tips would be awesome. the wiki is.... first of all not the easiest to navigate formatting wise, second of all it has a lot of rules in place about not providing too much support for specific mods, etc. it's also kind of overwhelming imo, especially if you're totally new to modding, and the discord moves pretty fast so people don't always feel like they can ask their questions. a forum like this would be ideal to fill the space the CF forums left with stuff like the guide to map modding, etc. that are now outdated. it also has the advantage of letting people comment and ask questions, which the wiki doesn't!
so for example you could have a thread like "step by step how to make a recolor mod" with image examples (not the easiest on the wiki or reddit). then in the thread people could ask questions about that specific sub-thing, come there for help, etc. same with a thread on "resources for fixing broken saves" with links to existing guides and more specific steps, or a thread with someone's personal mod recommendations, a thread on how to read a SMAPI log, etc. that kind of specific guide doesn't really have a place on the wiki and is hard to make on reddit without being able to embed images easily. but here, you could have a super long in depth tutorial on something with all the pieces in neatly organized posts under spoilers so people could skim to their specific question.
a general "ask your modding questions" thread would also be a great thing to have here imo. ask something you're wondering about but haven't gotten an answer to elsewhere, and people can walk you through it and show you more resources for it. and that kind of thing would lead to more mod making/using threads with specific tutorials that people could link and reference!
also, honestly, nexus comments are a horrible place to troubleshoot bugs, and i could imagine in the future some people might prefer to just close their nexus comments entirely and direct people to their mod's thread here for support.