If there was a 3rd branch for thief, bowman or pirate...

Although Infighters could pass as thieves, how exactly do Gunslingers fall under "Archer"? o_o
Yea, they use Dex, but that's easily changed.
The only similarity is that they're ranged.

Guns are the modern equivalent to archery. In ancient times, arrows would be used in a way akin to the way guns are used now.

They're two sides of the same coin.

That and the gunners use tactics often associated with Rangers in other games. Summons, and the ability to take in monsters to have them help you. The only thing that would make NO sense is the pirate theme to the skills, which could be EASILY changed to be more in line with established Archer skills (i.e. octopus and gull would need to be changed to less aquatic themed animals, and the battleship transformation would also make no sense). The octopuses could be automatic gun turrets and the gulls could simply become another bird of prey like the Archers are known to use thus far. If the gun turret idea seems far fetched, that idea could be scrapped and they could set traps (like pitfalls), and the advanced version they learn later on would be to install mines.

Which reminds me: "raptor bird" is redundant. "Raptor" alone indicates bird. It'd be like saying "ATM machine".

I want a melee bowman.

Am I the only one confused?