Senate Mision rewards

[CPT Worsham]

...though it would be interesting to see what happens when those units are modded out.

I have seen the results of this. I removed all merc units from my vanilla mod, and when the senate gave me a mission that promised an exotic (merc) unit for a reward it was unable to give me the unit because they had been removed from the game. I don't remember its exact words but the mission success message said something to the extent of, "you can not be given your reward because the unit is not available." This did not result in CTD or anything. I just felt a little bit cheated, but it caused no real problems.

[Zarax]

descr_senate.txt controls the reward/penalty system.
You cannot control what rewards exactly you will get but at least the reward level will give you a measure of the likeness in getting the better stuff...