Guess what's coming, see how much a traveler can stuff in 1 checked bag. While this will make less checked in bags, this will create heavier pieces as they put more into a bag.
For me this personally doesn't affect me as I either carry-on my bag or its just one bag checked in.
OK, they charge $25 for the 2nd bag, and say that bag doesn't make it with you, they should refund the $25 plus pay the flier an extra $25 for their inconvenience. We know that won't happen but that would be the fair thing to do.