The pack has been maintained and updated for nearly a year and continues to have update passes for all mods every two weeks. Balance is a very subjective term. To us, it isn't about nerfing everything, but rather finding a harmony between mods, their difficulty and what they offer. To this end we've re-balanced some magic mods as well, Botania may be a bit harder, blood magic early game a bit easier but fully automating blood a bit harder. We've balanced some tech mods (We're looking at you RFtools, Mekanism, draconic evolution) and we've boosted some of the old favorites like IC2 nuclear, Buildcraft and Forestry generations to be more comparable to newer mods. All the key changes are outlined in the in-game book and are constantly re-evaluated to try and ensure the best play experience possible. If you're looking for a pack that has it all, is supported by experienced staff members, and continues to grow in response to your feedback then Nuts and Bolts is where it's at!