I know, I know, this subject, with all the newest rules and regs - has been beaten to death but it looks to be a hot topic for some time to come. Like some other posters, I'd like to have the option to travel with no checked luggage when possible (not that we ever use huge bags) but we're already stuck with really expensive bags from the 90s that now are considered too large, Heck, I'm reading that even RS's rolling carry-on is too large by some European airline standards.
As the regulations are starting to vary a lot from airline-to-airline, new costs for checking bags is likely to cause a serious shortage of cabin storage, and more new luggage rules are possible at any moment. I'm afraid to invest in new carry-ons only to have them become obsolete in a matter of months!!! Or acceptable by one airline but not by others. Or something. Anyone else as bewildered as I am???