I'm not sure whether you're saying gnats and wamoura are weak or overpowered.
I don't know if they nerfed it, but putting up wamouracampa's blaze spikes and enfire effects made him pretty good. He's just slow, slow, slow-moving.
I started gnat last night, but only took it to 10.
As far as raptors go, they have no useful TP moves, or, if they do, those moves must come after level 44, which is where I decided to leave it. And it's not like flytraps, which have an excuse for having no useful TP moves: flytrap TP moves will stink no matter what. Raptor's TP moves should be decent, but as far as damaging TP moves go, they are almost rock bottom tier, above only things like crawler's Poison Breath. Now, I should put a disclaimer that I got sick of raptor before accumulating tons of instincts, but I doubt it would be fun to go back now that it's even worse.
I would love to have a discussion about strong monipulators, but I really do fear nerfs too much to mention any names.
I'll talk about which monipulators are my least favorites:
The hell tier: Chigoe (so I hear) and crawler
Inappropriately underpowered: Buffalo, raptor, bugard
Appropriately underpowered: Flytrap, lizard
I just looked at a list of all the monipulators, and from the ones I leveled, I feel these ones need the most help. I gave chigoe a special mention, even though I haven't started him.
Edit:
Let's talk monster jobs briefly.
Abyssobugard's INT is too low in comparison to his physical potential (which is hampered by his high TP costs). Abyssobugard's only good for Ice Spikes and pulling with ancient magic for a few hundred damage. He should get a job change. I nominate him to be a samurai.
Flytrap could use a mage job. Geomancer, since he's a plant? That would be interesting.