I store alot of card sets on my profile, but unfortunately i'm limited to two sections to display them. I realise that adding more would just add alot of space on profiles to scroll through.

My idea would be to potentially add one more Showcase for a total of 3 (just seems like a nice figure in this case), reduce rows to 3x6 and add 'pages' that you could buy for each showcase, which adds an arrow to the showcase, so that users can click through more displayed items without taking up space.

This gives users an option to purchase a Digital Card Binder instead of just a showcase.

Additional point, the number of items owned shouldn't occupy space there, and should appear somewhere else, if at all.