The Technic Launcher system helps get around a lot of the complexity of distributing modpacks, once you get them put together. I did this, primarily so my godsons and their mother can easily get all the mods they need to come play on my private server. Admittedly, my modpack is mainly based on Tekkit Lite, with a few additions and deletions, so most of the hard work was already done, but I still had to do some tweaking of block IDs to get everything to play nicely together.