I'm not picky. If you really want to give me green naga, I'll just make them river/ocean dwellers. I haven't really gotten far enough into the idea to stick them in one biome. River snakes has a certain appeal to it, really... Hair color to specify job type is less than ideal, but we ARE dealing with 16x16 sprites here, so some compromises must be made, and it's a minor compromise anyways.
The icon looks good! That, except add an axe for woodcutters, pick for miners, a gem for gem cutters, etc would look pretty hot. Ideally, I'd want every weapon type, because you can't really forbid weapon skills. If there's no sprite for whips, then when I steal a goblin whip it'll look weird when I'm using it. I'd also prefer every job type, Phoebus is a good comparison because it has the overall "multitasking" job type, as well as individual jobs. I noticed though, that there's a few classes of soldier, like "tax collector guard" that aren't used, but it may be worthwhile to make a sprite for them anyways, so that when/if tax collector is fixed, the data will already be there and no further changes will be needed.
Nobles are a little different though. Understandably, they'll have a different society type, with a bit more emphasis on religion and warfare, so certain ones like the guild managers may not be essential, and the civilian hierarchy might only have 2-3 levels of "king", "chieftan", and "mayor" instead of all the various counts and barons and whatnot. But I work well with what I've got, so a handful of official-looking sprites and I'll do fine figuring out what job to assign them to. Do include some priest positions though, because when religion eventually gets included I'm gonna be all over that :3