Well, the idea is maybe even when the game goes under someone else can build a new client for the cards because they are stored on chain.

Would that really happen though...Them letting someone take their intellectual property. Maybe it could but the game would basically run on life support then and not last too long. No new releases could be made etc.

Many steemians complain that Steem has horrible UX and I agree with them when comparing to the centralized web.

Well sure, although people are working on things like the guest accounts.
Every single time i ventured outside STEEM and downloaded a wallet or started using other blockchain dapps ive had a miserable experience.
During the big airdrop for Obyte on Steem i downloaded their wallet and i literally wanted to punch the screen. I still have around 20 USD in that wallet set to sell but its just so idiotically convoluted i just cant take the time to cancel the trade and move the funds to an exchange. Ill probably leave the Obyte to rot there.

Ethereum i told you about. I used Bitcoin 1 time to send some fiat from coinbase through @blocktrades. Never again have i used Bitcoin.
I used TRX once to buy the SM cards on sesameseed. Worked fairly well, still slower then steem but theres literally nothing of any value built on TRON. I bought maybe 100 USD of EOS a few months ago but sold it right away because theres really nothing there as well and as you said their RAM, CPU thing is just too annoying.
Cardano has nothing on it, ETC has 200 users total by their own metrics... I really dont know.
All these top blockchains are just "paper tigers" that offer almost nothing of value outside the base "its a blockchain".

I too am looking for things to invest in but looking at the market, what do you go with? Seriously. I could gamble on something like most do and hope it goes up but thats just a gamble and would have nothing to do with the blockchain being any good.
So i just dont know. Id like to diversify as well. All i have now is a couple thousand dollars in Steem, SM and a few hundred in GU cards and ETH because i play the game from time to time.

Let me know if you find anything good. lol