The Posse needs a UA with a Banjo.
Enrage on a solo.
I'm a fan of League of Legends.
Enrage on a gatorman solo would be sweet. Fits into everyones theme forces.
Speaking of gator theme forces, new Caliban theme force. Drop pigs, steal gallow groves.
1) Epic Wrong Eye
2) Voodoo Doll Lesser Warbeasts
3) Another Unit Option
4) Anura Warlock
I'd love to see a caster with a battlegroup spell giving stealth and dark shroud. Granted Gators have a bunch of anti-shooting already, but I think that would solve the problems of armor without needing to create a new unit with AP. I think a caster would be preferable, because I really don't want to see troll units taking my AP gators and crushing things even more.
Some more ranged would be a great place to start.
Some sort of new breed of insectoid warbeasts or units, staying faithful with the swamp aesthetic so maybe giant dragonflies or mosquitoes?