I've definitely noticed the thin t-shirts. I used to buy a lot of black t-shirts with assorted Mickey graphics on them years ago (like back in the '80s and '90s), and those were made of sturdier material and lasted a long time. Then, for a while there was a shortage of black t-shirts! All kinds of red shirts and blue shirts and pink shirts, but not much in the way of black. I was happy to see them make a return in 2012-ish or so. But alas, these days, while there may be some cute designs on the current crop of black t-shirts, the material is so thin that it doesn't even seem like it would last a full year if worn a lot.
For the holiday season there used to be some really cute things -- mini-gingerbread Castle ornaments, mini-gingerbread picture frames, gingerbread Mickey and Minnie magnets, etc. A lot of those items -- at least the ones that were really well-made -- seem to have vanished.
And when they release something collectible -- like the mini-Jingle Cruise posters -- they only hand them out to guests for 2 days and don't sell them in any stores?
On a positive note, though, I think that Disney still comes up with some occasional good ideas -- their Mickey nutcrackers from 2012 and 2013 are great. And I love that they are once again selling big Disneyland food magnets! Back in 1993 or so, I got a set of large magnets at the Gag Factory in Toontown -- a big Mickey lollipop, a big Mickey ice cream bar and a big chocolate-covered Mickey pretzel. I always thought there should be a waffle too. Maybe even a mouse-shaped cookie. Now, 20 years later, DLR (and WDW) is selling a Mickey waffle magnet (which is comparable in size to the 3 magnets I got back in '93). I think there may be a Mickey-shaped (not frosted) pretzel magnet too, but I didn't find that one. And I think they also have a Mickey rice krispy treat magnet. I love those food magnets!
I heard from a CM at Trolley Treats that the famous gingerbread cookies with Mouse ears had been temporarily discontinued in 2013 and she wasn't sure if they would get anymore in stock for the holidays, and they did get more in (thankfully). I don't know if those cookies are going to disappear in 2014, but if so...I hope DLR makes a magnet out of them!