I've done my own observation, and here are the things I have noticed. I'm not sure if you removed these yourself, or if something went wrong though.
USER PROFILES
►Mixpod not showing.
►Youtube Video doesn't show.
►Profile Message doesn't show.
►Awards don't show.
►Average and Total online time doesn't show.
►Gender icon doesn't show.
►Most of the information on the Profile's statistics tab doesn't show.
►Profile ratings no longer there.
►The image plugin doesn't work. (Nothing happens when I click a BB coded image)
►The "Thanked Post" system no longer works, already thanked posts don't show who thanked it.
►B Bank not accessible.
FORUMS
►Awards don't show.
►"My Mood" doesn't show.
►Kumi doesn't show.
►Status doesn't show.
►Avatar doesn't show in top right corner.
►The bar or line that separates sticked threads from regular threads doesn't show.
►"My Notes" from the Navigation Bar, is no longer there. (All my important info and codes gone along with it)