Aldinn is the Old World.

Explore a medieval pack with dangerous mobs, magic (spell crafting!), lots of extra enchantments, and a balanced mixture of tech with server friendly automation.  Progression is meant to be a little slower, with true creative flight not being available until very late game.

 

Highlight mods:

Forbidden and Arcanus

Enlightened End

Mystical Agriculture

When Dungeons Arise

Oh The Biomes You'll Go

The Undergarden

ProjectE

Refined Storage