As the person who compiled the NATO Fighters mod, I can offer a couple of suggestions on this matter.
1. The reason I did NF was because there are a lot of people out there--a lot more than you think--who are a little less savvy to modding the game, and I wanted to give them the opportunity to easily install some of the best mods produced for the game. In that respect the pack was an outstanding success, with over 4600 downloads of the original pack as of this morning. Its not for people who like to install their own mods and mess around with the game files.
2. In my opinion, the success of such an effort requires tight focus. You have to choose only mods of the higest quality and tightly integrate them into the campaings. It can't just be a hodgepodge of everything ever released. In NF for example, all the new aircraft are high-quality with skins accurate to the campaings they are integrated into. A subset of weapons was added for these aircraft, but the entire weapons pack was not inatalled due to its large size and some inconsistencies within. You also have to keep an eye on maintianing a resonable download size, which is why NATO Fighters is being released in installments.
3. The pack needs to be assembled by one person according to his own vision. No commitees or team decisions. Otherwise, you can kiss the goals in point #2 goodbye, because everyone will want something different.
That said, I would really like to see a pack like NATO Fighters for First Eagles. I would personally use it. I spend so much time working on the jet games that I don't get to do much with FE, so a quick and easy installer to add some high-quality mods would be most welcome.