What is the Fusion Pack: The Long Answer
AAA was the first. You had to install the sound mod and then drop all the AI-converted planes in the Files folder and update a file called filelist.txt... basically a pain in the ass.
Then the new wrapper came along, which allowed use of the MODS folder, and separate mods each in its own subfolder and without filelist.txt, but you still had to install the sound mod, then add the AI-converted planes (at this time there was a pack with all the planes, but no UI yet)
So one guy invented the first mods pack for Il2, called it Mods Collection Package and uploaded it to BitTorrent.
A couple of versions later, AAA launched the first UI, but the MCP guy didnt like it very much because he thought that there was too little stuff in it, and some stuff that shouldnt be there had been included instead. At the same time, the same guy packed together a bunch of add-ons for IL2 and uploaded it to BitTorrent as the 'ShitLoad of Add-ons' pack.
That guy's nickname was Luke771.
Later, the UI was by own claim of the AAA staff "not a complete package but a starting point", and the MCP guy (you have realized that it would be me, I guess) decided to make a better and more comprehensive package, merging together the MCP and the SLoA + adding compatibility to UI, created the first Uberpack, but still no website. The Uberpack was only available on BitTorrent, and later I made a blogspot where I published updates, info and other stuff, plus cross-posted my contributions to the FS~ forums (skiesoffire.org) because those arent indexed and are unaccessible to non-registered users, and I want to make my posts available to everyone, as they included useful info about IL2... and not only.
By this time, the Ultrapack had been available for a while, I was vaguely aware of it but I never looked into it yet.
AAA admins had shown more than once that they were major league assholes (well, some were) and a whole bunch of modders who didnt agree with AAA policies started gathering at other sites, such as SAS + a whole bunch of non-English forums.
Then I tried to merge the Ultrapack into the Uberpack and the Fusion Pack was born.
It was one mess of a package, basically an Unified installer thrown on top of an UP 1.7, it did work, kinda, but it was like one huge bug with some small mods around here and there.
Ultr@pack 1.8 was more like it. A good mods pack that aimed at the same user as FP, the kind of user who only wants to install one thing and forget about it. As the new UP pretty much provided the same thing that I was trying to provide with FP, I decided to make the new FP an expansion pack for UP, so that's what we have now: FP is not "yet another" mods pack, but an expansion for UP, that adds some more features to an already feature-rich package.