MM5 main target was probably extreme power generation obtained via Rotary/Reactor Craft.
MM4, I forget? I believe that was the Chromaticraft pack which very few people enjoyed due to it, however to me it was quite fun, better than thaumcraft imo.
MM3R, avaritia, yet to be obtained and seems as if most people want this to be hosted again.
MM3 diamond dimension at the end, space race at the beginning I believe.
Prior versions I do not know since I don't believe I have played them.
queeba's packs have the same focus as the average civ 5 game aka get into space so the extra stuff diesnt really matter
Pretty much the same in every other mod pack in some aspect.