Exorcists Lite Version 2.0 is now out. If you'd like to see what has changed look over the "changelog".
A decent-sized mod pack for me and some friends in 1.7.10 (anyone is free to use this at their leisure).
This mod pack is meant to make exploration and progression more difficult as the overworld is riddled with powerful mobs in an attempt to make you expand into possibly unfamiliar mods to defend yourself. While you may find tech helpful in taking on the Aether or Twilight Forest you may want to delve into Ars Magica 2 or OreSpawn to better prepare yourself when you fight the fearsome enemies you find in the overworld! Also if you want to play in an RPG playstyle make your way to the end and the rest will be for you to figure out!
If you want to have the challenging version go to Exorcists 1.00 instead of the Lite version
A few mods: OreSpawn, Applied Energistics 2 (with other common mods run alongside), Thaumcraft, The Twilight Forest, Ars Magica 2, Blood Magic, Buildcraft, Draconic Evolution, DivineRPG, and a lot more!
I will add mods periodically for either convenience or more content to explore.

