Whew! If this is truly over, then it's time to level up, correct? I believe Jon mentioned that we earned a level up after that really cool RP of Illivarra's failure due to Jaezred and the subsequent branding of Adinul.
Animate the skeletons. Equip them with their own weaponry.
Use the flesh to lure beasts of the Underdark. Tame them.
Return gloriously, with greater military strength. Watch the Council weep.
That's actually a pretty sound idea. Only downside is that it might offend the Council a bit to lead an undead army into a city that's not too fond of them. Could we smuggle the undead army in somehow instead?
Screw the council, they are idiots who led us into a battle versus an epic monster. They clearly do not know what they are doing.
You guys have Illivarra's permission to animate at will.