Bad stuff (no likey):
All the extra magic stuff (wisps, blue trees, etc)
All those shiny ores that shine through the world while it's still loading
All the extra extra extra stuff on top of many things already in FTB (and the huge cost increases for things)
Good things (me likey)
Red Power!!! YAY! (tubes)
Sorting machine via Blutricity (yay!!!)
Blutricity itself! YAY!