The Pack adds a lot of tech, some magic, and a lot of extra building potential. Some extra structures to make exploration more interesting as well as some mods for better performance and a better multiplayer experience. There are many late-game automation techniques and building possibilities. The performance is way better than in the vanilla game which is required for the late-game on a server or just a big singleplayer world.
With over 200 mods it's a really big pack and focused on stability and FPS on servers.

