I have a popular WordPress plugin that's been downloaded over 35,000 times. I offer both free and premium versions of the plugin. It's been around for about 7 years now.
I would like to contact someone at wix to talk about the feasibility of porting the plugin over into the Wix app system. I have a lot of potential customers that are interested in using Wix. I created a demo site & have a decent feel for how it "could" work, but would love to send an account manager a screencast of my plugin before proceeding.
I think it would make a great addition to the Wix system. I think it can fill a space that no other app has been able to fill.