Im unimpressed by Gomi.
Meh, I like Gomi and would feel that he'd be an exciting addition to UFC's LW division, but he can be inconsistent. There are times when Gomi looks unstoppable (vs Kawajiri), and then there are times when Gomi looks like utter garbage (vs Aurelio the first time). I'd like to see him fight someone like Clay Guida. You just need to watch the correct fights, like his fights against Azeredo (The first), Pulver, Kawajiri, Sakurai, and Ishida.
I think Sherk's a tough fight for pretty much everyone. I mean, the guy won't stop until the fight's over, and his stand-up has improved. Maybe someone like Shinya Aoki could beat him, since Aoki loves to work from his guard. Aoki's more of a WW, though.
Hansen, Kawajiri, Melendez, JZ, Shaolin, and Uno should all be in the UFC LW division, but Hansen turned them down, and the only guy who looks to even have a shot is Melendez. Uno should've been brought back, since he's still a really solid fighter.