Honestly, I see this all the time. You've got brilliant proof sitting in a vault somewhere, but it's so scattered that your team ends up dumping a PDF or a random quote on a prospect and hoping it sticks. That approach rarely lands because it's not about what you have - it's about what they feel is relevant.
From what you've described, the real problem is being able to pluck the right snippet at the right moment. I've seen this work well: break every case study into three emotional beats - the pain before, the shift that happened, and the outcome that mattered most to them. Then tag each by industry, problem, and buyer role. Pop it into a simple table or Notion page. Now, instead of sending a wall of text, you can drop in a short, relatable story that mirrors exactly what the person on the call just told you.
For example, you don't need a two-page document. Just say: "You mentioned feeling overwhelmed by follow-ups. We worked with a similar team who were drowning in manual replies. After they shifted to a more human, timed approach, their response rate jumped from 18% to 31% in two months. Want me to walk through what they changed?"
It works because no one reads long docs when they're deciding. They scan for a reflection of their own struggle. When they see a tiny, vivid example that feels like their life, it hits harder than any deck. So the fix isn't more proof - it's making your existing proof easier to wield. Hope that helps a bit.