It's easy for me to make jokes about this, but I'd rather not. You have somewhat changed since back then.
Don't feel too bad, it's a virtual server with a rank that has no meaning in real life. Now you have more time to do what you want.
Your profile picture is an important element of your online presence. It conveys messages — in any case — and can affect the willingness of others to contact you.
Your current photo may allow new connections to see that you are a weeb in flesh and bone and give your personal brand an actual bad identity. If you put an office picture on something, it means that you are not hiding.