Reducing bag size will make NO difference until regulations are actually implemented. Flew FRA-DUB on LH last Friday. Vastly oversized bags. People bringing two bags on and one guy with a suit bag trying to make sure it didn't get creased!! Unreal. EI are as bad if not worse. And it affects departure times. No doubt about that in my mind. Surprised at LH. everything else in my experience with them is flawless and I have no complaints but it seems even the order loving Germans don't want to upset Pax. And you can check a 23kg bag in for free with them. I only ever take on a lap top bag that has a couple of pockets you can throw a few other things in. I mean, how much do you need for a short haul flight?
I just don't get it.