Yeah, I agree with what natellio and WFUnDina said.
This is the first online manager game I ever decided to get supporter for, and I'm happy I did.
Two other things I like:
11) Bookmarks - want to follow that player on the TL? Put him on your bookmark list, add a little note about him, and you cam more easily track how much people are paying for certain kinds of players.
12) Having the sidebar menu move to the right side in the forum view. Saves time during navigating.
Really, none of these supporter benefits really disrupts the competitive balance between supporters and non-supporters, which is, in fact, part of the genius of it all.