Sorry guys but I have no sympathy. Heavy carry on baggage is purely & simply a SAFETY ISSUE.
Too much weight in the O/Head lockers is very dangerous. Have seen a lady knocked out when a heavy bag fell out & hit her on the head. She suffered a skull fracture & the end result was a large law suit against the airline which they subsequently lost. The capt was also going to be sued but this did not eventuate
I travel a lot & find it much easier to keep my laptop & a book only. Everything else goes to the hold, more room & less hassle for me that way.