
From my opinion:
Firing staff is not a common task, I use it one time..., a specific button for each person is not needed, a simple screen mixed in the recruiting screen will do the trick (and it's easier to see the available persons and the current employees at the same time...).
Scrolling bar is really a need, as BASPM is schedule for portable device, it will be a shame to not use this functionality supported by all mobile device. Same for the computer.
As people life is not always working, training or wasting time... the dismiss button could be replace by the "normal" training... cheaper... tasks that give moral, fame, money... Like holidays, social events, politics rendez-vous, etc...
I would prefer a more "60's" set of graphics for the GUI, replacing only the background by a 60's monitor from the control room take no time, it could be great, same for the mission screen...