Oddly enough, i'm currently working on a program for Killerbeez that will create a custom modpack depending on config files. However it will require the user to download the files from the Author's own links/Home, which the program gladly points you in the right direction automatically.
I despise people who do this sort of thing and ignore the Authors entirely, they work hard and their work should be displayed. Its bad timing for me as i am still working out the kinks and to be honest; people would gladly go for the easiest like this modpack, rather than my program. The program is essentially a proper Mod Downloader/Patcher/Loader, though i'm a bit shorthanded on the latest techniques, being 5 years since i last programmed. But! I do have a base prototype that is operational and i hope to combat fools like these with it.