NCF – Extended list of Neutral creatures.

Will deserters be next? Will they add upgrades for them?

Yes, one will be a townsman (cowardly guys with spears), and the upgrade will be a volunteer (a guy in tattered chainmail with a rusty helmet).

Added 7 minutes later

I think rangers should be in the stable, and mercenaries in armor (swap the upgrades).
Maybe make thieves into shamans?

Ranger-swordsmen are a tribute to Stronghold 3 :D + rangers are always guys who keep order, so rangers got armor like city guards (well, also because guards in Dark Messiah are simultaneously archers and swordsmen).
I was thinking of making thieves into archers, but giving them a thin body without mega gauntlets.