And who will moderate the application? Even in the appstore and Google Play have been scandals with applications that were trojans.
Right now we are using a simple process to avoid any issues. When a developer wants to upload the game to the store we basically check it against Play Market, and if there is the same application with the same name - we just get the same APK version from the Play Market and use it in our store. Basically we let Google do all the job for us

Also we are targeting to simplify the process even more. For example the developer will need to just verify himself (f.i. register with the same email or domain that is used on Play Market) and we will automatically drag all the applications that he has in the Play Market, then he will just need to select the ones he wants to publish. We will copy the APK, descriptions in all languages, screenshots and publish the game, and will even monitor the updates to automatically sync our store with the Play Market's version.
The only complicated part is to track the applications that will be Gamecredits-first, but again there are known procedures for that, although it will involve some manual checks and so on, but we will be making this variation of the process simple as well because in the end of the day that's our goal - to make Gamecredits store the first platform of choice for game developers.