As I said in the UA board I think,
ozstamps, this doesn't bother me. It's what the flying public wants -- more carry on space, more carry ons, less checked baggage.
I hate checking baggage for all the reasons you all brought up -- poor baggage handling, delayed baggage, waiting interminably for the bags to appear, lost flexibility for last minute re-routes, etc. etc.
I think people are treated differently. If you check in as an elite member or in F, you board first and you bring more bags and there is room for them. People who board late have more problems finding room and that is when the airline uses an eagle eye to spot extra carry-ons and insist that they be checked. That is my experience anyway and I have no problem with it.
I do have a problem with people taking very large carry-ons, that is ridiculous, and carry-ons that they can't handle, where they need help in getting them into the overheads. I don't think that is right at all -- carry ons should be reasonable and the pax who carry them on should be able to handle them, lift them and stow them, or else the bags in question should be checked.
I don't like the baggage templates either.
I say, give the flying public what it wants, and that is obviously lots of carry-ons.
I'll stop carrying on now