My team has been using Campsite for the last 6 months and we love it.
For us we needed a central place to share designs and gather and store feedback. Our biggest problem before Campsite was having feedback scattered in different places - slack messages, google docs, etc. As the sole designer at my org I was constantly getting asked "where did you share that [insert project] designs? I can't find it in Slack". Now they just know it's in Campsite.
Campsite has become the place that I request async feedback from internal stakeholders.
In addition to all of that, it's a beautifully designed product (which makes sense since it was founded by a designer). Design founders FTW!
Cheers and congrats on your launch.