I saw this the other day, and to be clear, the only
real change is that you get free insurance for up to $50 or $100 (depending). You could always find out how long your package would take by going to the USPS's
Postage Price Calculator. At least in my experience, tracking has always been available for Priority packages.
As for USPS woes, I've never really had any problems with them, but they're really only cost efficient for smaller and/or lighter packages. During my eBay selling, I've found that if you have about a "medium sized box" (say... greater than maybe 800 cubic inches) that weighs over a few pounds (4+?), it's almost always cheaper to ship via FedEx or UPS. Also, to note, insurance is free on those for up to $100. For auctions that are close to that threshold, I normally add both FedEx and USPS, but everyone just selects the main option anyway. Had a guy pay $15 for shipping a $25 item, when it would have been about $4-5 cheaper to choose the FedEx option.
😛