I'm thinking, what if Bethesda Softworks made one, but as an official mod? Just an idea.
Won't happen. Fighter's Stronghold (Battlehorn Castle) was the final official DLC. Also, I have never tried it, but mr_siika's/centurion's http://www.tesnexus.com/downloads/file.php?id=20799 shouldn't be "really poorly made". They are excellent modders and judging by the endorsemants and the amount of downloads it seems to be solid enough. What's your issues with it?