Text length? So this is focused on Show HN:'s and Asks? That's cool to find missed projects people have submitted, but considering a majority of posts interesting and not are just links, seems like a lot of 'gems' are gonna be missed. Look to the Pool (https://news.ycombinator.com/pool) for that I suppose.

Yeah, I think a true hidden gems finder might have to use an LLM that has been trained on what does or doesn't succeed here to properly categorize the results.