Would be a good idea to move the front page "download" button next to "multiplayer" with the same white font / color. I only noticed it even exists like a month ago. Would reduce the amount of wrong median version installed problems.
Also the mod install instructions could go under the same "download" header, since it's only logical (should also include instructions for d2se / plugy until they become obsolete, as well as a link to the launcher). Right now you have to go "multiplayer" -> "join" which just makes no sense, especially if you have no intent of playing mp.