Very bad idea. Ethereum is not scalable, had a network failure, and is going down the drain. Any token or game asset on a bitcoin blockchain is the most secure. No need to create a shitcoin on top of a scamcoin.
I agree, Ethereum is not a good blockchain to tie our cards to. What will we do when it hard forks again and creates two different chains? The only other blockchain besides Bitcoin that is secure and good enough to use for game assets would be Litecoin in my opinion.