So I doubt I'm the first to notice that war exhaustion seems really off, with the only two main things that matter being fleet and army loses, while both sides suffer the same slowly increasing attrition level, but it seems with the new mechanic of devastation war exhaustion seems even more off. I've had some wars so far where I completely annihilate the enemy fleet and bombard all their planets yet I'm still the one with technically higher war exhaustion since I've lost more ships over the course of the war from taking all their space stations. Plus on a realism level it seems very strange that having a planet completely devastated by war adds nothing to war exhaustion at all, an empires citizens should be crying out for peace when their homes have been destroyed by planetary bombardment.