I know this obviously sounds bonkers to suggest if you're already set up as one type of company. But if you keep the social media platform's design really simple a chance for users to showcase their cards.

I just think there must be a great potential for you to funnel your community of users to their own space where they can discover other cards that they could learn from or utilise. You could reason that this would have the potential to increase your relevance through your ability to grow your base.