What would you want from a Facebook/social networking app?

I am a developer who would love to get involved with social media SEO. I know there are a few facebook apps out there, but my question to you guys is: are these apps doing what you would like a facebook (or other Social Net) software app to do? Please let me know, many thanks guys. Anyone who responds here will get a free copy of my app if it comes to fruition, and I've been here since 2011 with a good record, so I stand by that. So you have nothing to lose. Just looking for input.

Thanks guys!