Fireborn SMP Pack

This light modpack expands the gameplay with a bit of automation (Modern Industrialization), improved world generation (Simplex Terrain Generation, YUNG's Better Caves) and few astounding visual improvements (Immersive Portals, Bits And Chisels), while still staying in the style of a vanilla game. 

It's recommended mostly for small servers among friends, with the focus mostly on cooperation and having fun, instead of going for a typical gameplay.