Blaze of Hearth

This modpack has just a bit of everything. From Mekanism to Ender IO, to Thaumcraft and Reliquary, and so much more. This pack is packed full of so many things to do, it'll be a challenge to do everything in just the first half. The mods included were loosely based off of FTB Revelation, plus or minus a few config tweaks and added mods. 

As for what you can do in the pack, it's virtually limitless. Want to build a giant base in the middle of the ocean that also operates as a wireless power beacon? It's been done. Want to unleash your creative side while still keeping that old style look? You can even make a robot that's powered by Redstone, grows Diamonds from a seed, and can automate the crafting of reactor parts that will eventually be more devastating than a nuke filled with Plutonium and Industrial TNT. 

If you have the resources, this pack can be tons of fun by yourself, or with a server full of friends. With machines and creation like this at your fingertips, there's almost nothing you can't do.