Late to the party, but in answer to Deaths Grip's inquiry- Attack and Hide is still up at PES.
And I'd like to recommend these mods, which I did not see mentioned elsewhere in this thread:
http://tesnexus.com/downloads/file.php?id=22197 and her Dareloth's House upgrade mod, which is listed under the files for MTCThieves Grotto.
To quote her description from the details page:
This mod more than merely augments the Thieves Guild- it adds a metric ton of very inspired lowerclass and scoundrel-friendly gritty/grungey atmosphere to the gameworld (that could be said for almost all of her mods, and indeed I do recommend them all). I've been using it since ver2, and would not dream of removing it. Some folks reported issues with ver 3, that I did not experience. However, ver 4 is up, and working great as far as I can tell. It expands and refines what came before, and even adds a brand new grimy little city across the waters from Anvil. For those who would like a more balanced and realistic representation of the various social classes in the gameworld, and who prefer their thieves to be rough and dirty around the edges instead of high concept uber-ninja-wannabes- look at these mods.