I know at least some of this has been covered elsewhere, but I didn't see anything active, and wanted to put up my take.
Better Nobles
Part of the interface improvements will (hopefully) be adding new ways of accounting for your fortress information. These improvements will be extremely useful in the late game, but not so much early on. Coincidentally, this is when the nobles show up. It would make them a lot more welcome if the nobles arrival and presence corresponded to increased functionality in the logistics screens
Prospector, Surveyor, Assayer
• Ability to zoom to unmined rock of different types
o Useful if you are tracking veins, zoom to a vein of something
• Ability to track unmined rock of different types
o Obviously (Fey Mood) dwarves know what’s out there. Why can’t we see a list of what’s in the walls?
• Ability to ‘see’ through a single layer of rock to the layer behind it
o This could be an assay task similar to wall smoothing
• Ability to find major deposits by soil sample.
o Maybe get a report on a point based on the relative nearness of a few types of minerals (Adamantine and Gems should be exempt.)
Ranch Manager
• Designated ranch areas where animals want to be?
• Automated butchering options
o Kill a male animal at random every so often type stuff
Sergeant of the Artillery
• Automated Siege Weaponry commands in one place(enable a callout, battery fire, etc)
King
• Feudal Society: If the king ain’t happy, ain’t nobody happy
o Having the king around should make the dwarves basically happier
o Having a happy king should make the dwarves basically happier
>Urist was complimented by the king recently
o Additional trade options (receive tribute maybe?)
o Better Immigrants?
Bard
• Adds happy thoughts to people around him
• Philosopher could do the same, or even take complaints
Guild Leaders
• Increase base pay for the job-guilds they represent
Adding a good list of potential nobles could also help differentiate the various races (elves get bards, but dwarves don't, etc). The core of this one is: Nobles should be an acheivement and a boon.