The only problem so far, is that the greater Steem community just does not care for games on the run on the Steem Blockchain.
There are some great games run already, with incredible engagement from a few key players that are largely ignored by the Steem community. Game masters like @daclawboyz, @happyme and @lordnigel put in a ton of effort every day for their love of their games and the Blockchain, but are not rewarded.
Your idea @cryptoctopus is a good one... but why would any game developer ever risk working with SMTs and the Steem platform, when the community ignores its own gamers?
Your idea will only work once there is actual, tangible proof that there is a supportive, vibrant gamer community on this platform.... and at the moment, there just isn't.