It seems the tower level defenses still don't work. Unlike in TWW1, there's zero difference between level 1 and the highest in multiplayer in TWW2, whereas there is massive difference in the single player/campaign game. Which makes defenders very underpowered compared to TWW1, given that the money difference hasn't changed. Previously, the menu option was even lacking to change the tower level defenses; Now this was added, but it doesn't actually seem implemented. Perhaps someone could do something about this?
I keep writing towel defenses, perhaps because that is what they now resemble in MP!