Air defense growth is quite lackluster but that’s the only long upgrade I have left besides WT which are lower leveled. The only thing that helps with TH13 defense is the scattershot but that does nothing to edrags. AD could easily go to 500 dps while edrag, drag and hounds get greater hp boosts.
Then the 3rd and final upgrade today is my 3rd AD. I still have one more to go which can be done afterwards. No picture of my base today because I forgotten to take one.