A useful change (for me, anyway) would be to add an additional button in the Combat Preview window. At the moment the CP windows shows Acceptable Losses, Unacceptable Losses, High Risk of Defeat etc. If I want to proceed with the attack I have to cancel the CP windows, select the general again, choose Attack and then reselect the camp.
It would be really helpful, and timesaving, if the CP window had two buttons: "Cancel" and "Proceed with Attack" (or something similar). Then I could do the attack directly instead of having to go through the multiple clicks as described above.