Actually I suspect including banks and stock-exchanges into the geography of the game would be seen by most here as far from seamless, as I suspect most here prefer to just buy and sell and swap and trade crypto assets without having to have some avatar/character on some world make its way potentially though dangerous parts of a city to the financial district to visit their broker or the actual stock-exchange, risking pickpockets and muggers and buskers and mendicants and gosh knows what else just to do a crypto transaction! 
So far I am first getting the whole kit and kaboodle playtested and up and running and working.
Someday if all goes well and enough money is coming in doubtless more and more parts of the mechanics could be coded into smart contracts but more important first is to actually determine in real life whether the mechanics actually work well and to fine-tune them and so on.
Until we have a whole complex economy successfully up and running and sustainable it seems far far too early to start trying to carve it in stone as it were as smart contracts, and if the smart contracts are not graven in stone as it were then the whole point of using them at all is undermined so why bother until absolutely ready with perfectly tested and proven game-mechanics worthy of indelible coding...
-MarkM-
So far I am first getting the whole kit and kaboodle playtested and up and running and working.
Someday if all goes well and enough money is coming in doubtless more and more parts of the mechanics could be coded into smart contracts but more important first is to actually determine in real life whether the mechanics actually work well and to fine-tune them and so on.
Until we have a whole complex economy successfully up and running and sustainable it seems far far too early to start trying to carve it in stone as it were as smart contracts, and if the smart contracts are not graven in stone as it were then the whole point of using them at all is undermined so why bother until absolutely ready with perfectly tested and proven game-mechanics worthy of indelible coding...
-MarkM-
That’s a solid point—most crypto users expect fast, direct transactions rather than navigating a virtual world just to manage their assets. A game forcing players to physically visit a bank or stock exchange might feel immersive to some but frustratingly inefficient to others. The challenge is finding the right balance between realism and convenience so that economy-driven mechanics enhance the experience rather than slow it down.
I completely agree that rushing into smart contracts too early can be a mistake. Locking in mechanics before they’ve been properly tested could lead to rigid, unfixable systems that don’t work well in practice. A game economy should first prove itself sustainable and engaging, and only then should blockchain be introduced where it truly adds value—whether through automation, trustless interactions, or enhancing ownership.
That said, once an economy is well-tested and balanced, do you see a role for blockchain in ensuring fairness and decentralization? Or do you think traditional databases are still the best approach for game economies, even in the long run?