I think it'd be sick to have physical cards sort of like a rarity you know? It's nice to have rare cards on the blockchain but its even nicer to have TCG cards u can frame and keep on a collection, put on a shelf, etc. fortunately for me I kept a lot of my rare pokemon cards from when i was a teenager ya I was a nerd and now they're actually worth quite a bit and I've been gradually selling off my set. But nothing feels better then having someone else walk into your house and be able to see your cards physically in person hollographic and looking all sick and then fanboy over em 
On the subject of physical vs. digital.
What about enhancing the ways you can display and show off your card collection digitally instead?
Perhaps displayed as a hierarchy of rarity and once you have that card in your collection it lights up.
This gives collectors the desire to fill their visually appealing SOG collectors book/display even if they aren't that interested in playing the game itself and perhaps done in a way they can share/display it easily and attractively with friends/other collectors via social media.
That is a great idea.
