Take a hard look at the reason folk are carrying on >20kg "hand baggage".
Baggage slows you down, post 9/11 security has increased transit time through the airport drastically - no-one wants to spend any more time than they have to as part of the process.
Airlines are incentivizing SLF to not check in bags (especially Lo-Co's).
If you want to be serious about enforcing carry-on limitations, then you need to take a look at the amount of time spent in the airport and manage it more efficiently. How long does it take to ascertain that an item of luggage is oversize/overweight, initially might cause some problems but once SLF realise that rules will be applied, there will be diminishing returns..
So speed up the the baggage handling process, don't penalize SLF for checking in normal luggage, enforce the rules and/or re-introduce sensible limits.
There is the distinct possibility that by standardizing luggage and enforcing carry-on rules, departure times might be positively impacted.
Or alternatively you can have the bean counters work out how many personal injury claims it takes to offset the savings.
Last edited by Momoe; 17th Dec 2015 at 10:03.
Reason: addendum