Goodbye...

Tuxedo Pants
Patch 3.1 brought the downfall of Tuxedo Pants leveling.  Up to now, you could make Black Tuxedo Pants that you could add the TBC leg enchant to, in order to get that extra boost of stats to your level 1-58 character.   But now the enchant has a requirement of level 60 so there is no real use of the Tuxedo Pants. I must now find pants for 7 of my alts.  They are pant-less for the mean time being.

Shoulder Enchants
Also, with the introduction of level requirements for certain enchants, the 30stam 15res shoulder enchant from honor has also been restricted to level 70+. So the enchants on the heirloom shoulders will no longer work until level 70.

First Aid Books
I had an unpleasant surprised today when I flew to the First Aid vendor in Hellfire. Netherweave bandage manuals are no longer for sale. They used to be 2g from the vendor.  Now it is no longer purchasable.  You can train Netherweave bandages for 20g.  This is x10 the original price.  I know that the economy hasn't been good and that prices have rose.  But Netherweave bandages?  Really?  I advise you to run to the AH to get any cheaper manuals that people had bought and put up before the patch.