@jerrykrinock In my opinion this is not a good idea. Would you let any other company decide which features would be available in your product and which would not? After all, if Google one day decides to change its policy and block all extensions that look or feel bad in one way or another, then Opera will lose all products.
It is not good to depend on another company.
In addition, the Opera has its own APIs and its own moderation policy. Here's an example:
SaveFrom.net helper - this extension was quietly added to the Opera Store but not allowed in the Chrome Store;