The Best ServerPack

4.3 is a hotfix for 4.2. 4.2 was archived. This following changelog is from 4.2:

Added:

Advanced Backups

Better Combat (testing it out, might remove it again)

Create Aeronautics: Copycat Wing

Create: Copycats+

Create: Power Loader (train and vehicle compatible chunk loaders)

Horses Can Swim

Jumpy Boats (boat bunny hopping to get up short ledges)

Mending Reworked

Patchouli (guidebook dependency for Iron's Spellbooks)