I'm pretty confident they won't do that. One of the main reasons modpacks use older versions of mods is that the FTB team can't keep up with testing every update of every mod in every pack for compatibility with every other mod. Introducing a way for the user to automatically update individual mods in a pack would circumvent their regiment of stability tests, and generate oh so many tech support requests. Also, standardized modpacks are what make it so easy for FTB clients to connect to servers.
If you do want to update just one mod, it's quicker to find the mod online and download it individually rather than find a pack and download that whole thing.
Oh so itll be possible in the future to have, like, a 500 mod pack?
What about names? Like copper form IC2 and TE?
Yes. They'll have separate names so they can exist together.
It seems the future of modpacks is a topic with many conflicting opinions. I just hope stuff works better in the future!
Oh, and because I got everything working, Direwolf20 UPDATED! Now I need to fix more stuffs...