As Svper and Lax have been saying, we're looking toward some site overhaul which is going to include things like the death of the wiki, but is also an attempt to breathe some life back into the site. We really want to encourage everyone to contribute, no matter how small the effort, even if it's just cleaning up old information, adding little tweaks to macros or setups, blogging or bragging a bit about a new personal accomplishment in game.

As to the MoP Macro Library, I know using a priority system or slightly tweaking the old macros from Cata seem like no brainers, but there's always new people coming in with no idea where to start. And having such a massive thread that's mostly empty just looks kind of sad.