I've been working on touching up all of my levels for the past few weeks, and all of that work is now available to download in the first post!
Everything has been updated to have hints, camera paths, many of the levels have easter eggs, and there are even some brand new levels! There are also downloads for each level by year, so you don't have to individually download all 50 something levels.
Also, since I was asked from a handful of people, I included a low detail version of Secret Island so it's less laggy. Comes with both the individual level download and the 2018 pack.
Two other things to mention.
1) Sometime in the future I will update all of the MBG levels with extra copies that can be played in vanilla MBG without having to edit stuff in the .mis.
2) main_gi found some issues in some of the earlier levels, but most notably are missing textures in Towering and Construction Tower. I will hopefully get around to fixing this eventually.