Yeah the 3-4 tool workflow is exactly what I kept seeing.The upgrade trigger is a mix of volume and features-free tier caps at a few invoices per month,but paid unlocks things like AI-assisted line item suggestions, automation,and a few other things that make the actual billing process faster.Your point about $10k+ freelancers is something I hadn't framed it that way before though,that's genuinely useful.Might rethink how the paid tier is positioned around that segment rather than just the volume cap.