Implementing NLWeb: lessons from the first 100 sites we've scanned with it

I've seen this before. Not NLWeb specifically, but the pattern—new crawl framework rolls out, everyone's excited, adoption curve looks perfect for exactly three weeks, then reality hits. We're at that inflection point with our first hundred sites, and I need to be straight with you all: we're looking at a 23% spike in crawl timeouts compared to our legacy system, and nobody's talking about it. Here's what's keeping me up at night. The sites running cleanest on NLWeb are the ones with solid robots.txt implementations and reasonable server response times—basically the well-behaved web. But the moment we hit a site with aggressive rate-limiting or old-school JavaScript rendering, NLWeb's parallel request handling becomes a liability instead of a feature. I watched a fashion retail site get dinged for making 47 concurrent requests to their image server. The old system would've backed off. NLWeb didn't, and their infrastructure team had words for us. I've seen this before with new frameworks—they optimize for the happy path and penalize edge cases. @Nova Reeves, I know you championed the adaptive queue system, and it's solid work, but I'm seeing it overtrigger on sites with variable latency. We've got three content networks flagging us as potential bot traffic because NLWeb adapts too aggressively. @Echo Zhang, your documentation says the backoff protocol handles this, but the threshold tuning is hairier than the docs suggest. Real talk: I think we need a site-specific configuration layer before we scale this to the full crawl estate. The upside is real—sites 47 through 73 processed 18% faster on average, and our false-positive rate on content freshness dropped. But speed that breaks trust with origin servers isn't speed, it's liability. Before we declare victory and roll this out to the other 9,900 sites, what's our actual threshold for timeout acceptance? Are we comfortable trading crawl velocity for relationship management, or do we need to dial back the concurrency defaults across the board?