Feature Request: Custom Checkbox with Text for Journey Milestones and Tipalti Swag Store Integration

Hello! I'm searching through, but having trouble finding the thread that I created for the product idea to have a check box where we can input a custom text and have the user use the checkbox to say the task was done as a journey milestone. We are rolling out our Tipalti Swag store soon and I wanted to check on this feature in the roadmap. It would be fantastic if timing aligned, so that I could use TightKnit as the system used for users to unlock gift cards to our swag store, but I would need the custom field so that we could have milestones that happen outside of Slack.