I've been working on a couple more 50-wound lists. I like how AoS accomodates small armies. These are built from models that I bought because they fit a theme--the corsairs were part of my Dogs of war army--but I never would have made full armies from.
Lokhir Fellheart (5W, Hero)
10 Corsairs (10W)
Kharybdiss (12 W, Monster)
Sorceress (5W, Hero, Wizard)
5 Harpies (5W)
3 River Trolls (12W)
Total: 49 Wounds, 4 Keywords
Sea Helm on Skycutter (8W, Hero)
18 Sea Guard (18W)
Bolt Thrower (7W, War Machine)
Mage (5W, Hero, Wizard)
Merwyrm (12W, Monster)
Total: 50 Wounds, 5 Keywords
The Merwyrm uses the stats of a ghorgon