@ luke83
I would not "ressurect" your thread link, so I respond here.
Good idea, these infos are missing in the game.
Perhaps slightly larger, better lisibility for the player, more space to design them.
Also, as a player, I should prefer to see information continuously (ex: above the unit sprite) for all units (so, no need to act to see the icons), and even unconscious units; but this can be intrusive if lot of info to display.
You can also display the icons (above the unit sprite), only when the player move the mouse cursor over unselected units; but this can also be intrusive for the selected unit if lot of info to display.
When an unit selected, display the icons, "in the top status bar" as you said, permanently (and the icons are temporary remplaced while the player move the mouse cursor over another unit (conscious or unconscious), seems to be the best option.
And, as the space on screen is "large enough", you can also display icons for unit's Rank and for unit's "Task" (Sniper, Scout, etc.) and/or skills.
Personally, I don't use the trick to put info in the field reserved for the soldier's name.
But this can remove the need for the player to "pollute" the field reserved for the soldier's name ("Jenny Robertson" --> "Jen Rob Sniper React62 Psi63 PSk44").
Would also be nice if the players can add their own icons.