I’m currently in the process of developing a WordPress sermon plug-in. I’m trying to make it so that churches with WordPress enabled blogs can simply upload sermons to their website, where they can be searched, listened to, and downloaded. There is already one plugin that can do this (WpSermons), but that doesn’t have all the functionality I need, so I’m working with a coder to have one written from scratch.
My question is: what sort of functionality would you like from a WordPress sermon plug-in? I can’t promise to include any suggestion you make, but it might well be possible if you make a suggestion this early in the coding process.