Or level an alt to 70 and wait for the Xpac.

For sure the high end stuff of BC wont be replaced by greens in Northend but I am sure for an alt which has just reached 70 they will still represent huge upgrades easy to get.

I am personally more or less retired from WoW atm but I am very casually leveling a small shammy to 70 just for the Xpac. This would make be a combo of a dps, a tank and a healer for the Xpac