Oh, no actual recruiters or talent leaders? No way would I pay essentially a peer for something like this. That's what friends advise us for. You need inside info, and engineers and PMs just don't have it.
I think you'd be surprised - we are informed by certain awesome recruiters, but we've found that people generally feel most comfortable when talking to their peers about this stuff. There's a broad mistrust around recruiters.
One thing we could do is work with more recruiters more aggressively for data and guidance - ping them every conversation for example, instead of for larger industry trends. But we'll have to see if that could truly add value.