If you've never heard of Napoleon's Legacy, it's an alt-history mod where France won the Napoleonic Wars. gsg/ recently released a version of Napoleon's Legacy fully compatible with HoD and I felt like sharing it with you guys. Paradoxs's subreddit have a summary of it: Its from the same community over at /gsg/ and its alot of fun. If your looking for a 'change EVERYTHING mod' then I would recoment Napoleon's Legacy. You can in some way look at it as a super-pach. Thing beeing that its not anything like Ultimate who aims to change the hole game, vickymod its all about polish, add some flavor and tweaks. Its made by the good folks over at /gsg/ (4chan), so its changes are somehow not that good documented.
Small changelog summary from a while back.