I think you really do have a great plugin.
If that is really what you think, then you should go ahead and give this plugin 5 stars.
Me and Yakir have invested in this plugin tremendously, hoping that people out there will find it useful. The truth is -- we're not doing it for the ratings. We're working on this plugin because we enjoy building plugins for people to use.
Since I don't see how people will benefit from having this thing integrated, and since that plugin isn't open-sourced, I don't think we'll do it. And if that means you won't change your rating, then that's fine with us.
But again, just like I said earlier, this is a fairly easy thing to do, considering you are a developer.