I think it would be great to update the personal messaging system. It's very out dated. We can't add pics or files like on other social media sites. I'm not saying I don't like it here, I LOVE it here. But the messaging system is flawed. I've sent messages that have just disappeared into thin air. There's no way to track them.
Also, have you thought of making our homepages more interactive? Like, people would be able to come to your page and leave you a message on your wall? :)
Just some thoughts. :)