Someone suggested an app store type system where developers can write their own javascript apps. I really like this idea but it has big security implications, so for now if any developers want their game/app included please just PM me.
i would really love to have an appstore
to reduce security risks you could use an iframe with an sub-domain. but i understand your fear

btw i think you could just take some btc to develop frontend for other services. since you started your satoshidice integration i used them more often (and always through your interface) - so i think they owe you a little.
regards
flower