Thought I'd chime in here since I've worked at UPS and I've done packing and receiving so I see it coming and going.
While working at UPS (all lovely 9 days of it), I realized why so many packages are damaged and it all has to do with how packages are loaded on a truck. I unloaded trucks at a sorting hub and all we did was make some space, then just pull the 10 foot wall of packages down to load on the conveyer belt. Some fell nicely, others not so nicely. Sometimes you'd have packages falling on top of each other, which really looks like the case here. Mostly lighter packages were placed at the top of the truck so they have farther to fall. I can honestly tell you that no sticker you put on a package means anything, This Way Up, Fragile, Breakable, Live Animals, it doesn't matter.
Thus the responsibility falls on the shipper to properly package and protect. The 12" packaging we get now is a joke. The outer box should be at least 1" lager in every aspect and packed with either peanuts (packing not salted), or bubble wrap. Any impact on the current style gets absorbed by the actuall product, where as the packing material would absorb most of the common bumps and lumps without damaging your precious box.
Thirdly, after many years of receiving packages, no company is any better than the other. I've seen boxes from both UPS and Fed Ex that look like they were used in the World Cup, complete with foot prints. Neither one of them are great but what other options do we have.
I completely understand why SS is now using UPS for all shipments under $100 as it is in your best interest. Remember, if you change your delivery service back to Fed Ex, you will have a hard time getting anything from SS now that Fed Ex is not insuring those packages. It is a crap move by Fed Ex, most likely done because too many small claims were being made (almost all are their fault anyway), but a very consumer conscience move by SS.
I don't know if there is a way but we should really try to ask SS to add 1 cubic inch to the size of the outer box for the 12" figures for more protection. It would add barely nothing to the shipping and the weight differential wouldn't even be noticealbe. Oh and SS, Diamond Containers makes the best boxes!