Actually, instead of downloading, and packaging all this up, and having it outdated before it is even released....... How about writing an omod script that would install the mods current versions, and just give the user a list of mods to download, and then instructions on how to create the OMOD, or BAIN package, whichever trips your trigger?
Because that defeats the point of having a mod compilation, the vast majority of the time spent modding Oblivion is going to all the various download sites, going through the hassle of clicking through to find the download link, waiting for it to download (in the case of PES not a long wait, in the case of the nexus usually quite a long time for bigger mods). The vast majority of the mods on this list are not being updated anymore, particularly texture packs such as QTP3. Mods that are still being worked on such as RAEVWD, All Natural and AWLS hae had their permission refused, which is understandable.
I do however feel that including utilities in the release may cause problems due to the amount of files they may keep elsewhere and various dependencies they have. If they are included they should be in their original executables.
And you should package it as a BAIN wizard, the more who people migrate from OBMM to Wrye Bash the better as OBMM is incredibly outdated and painful to use in comparison to wrye bash.
I must also point out that it is not illegal to repackage other people's mods (the EULA states, essentially, that you have no real legal legs to stand on with regards to mods created in the CS), though that doesn't make it right and I'm pleased that makers of these compilations always take the time to ask permission before using mods, if even to satisfy some of the more pedantic 'tortured artists' of the community. Thankfully not many people with that kind of attitude make fantastic mods.