I tried two dealers and both wouldn't do anything more sadly. I'm nearly at the end of my warranty (34k miles) and when I had switched out my mirror caps to black ones at one point I broke a tab on the housing. If they wanted to they could claim that me messing with my mirror caused the vibration and refuse to cover the fix, though we all know that's not the case. It's just less hassle and time for me to do it myself since I've been fighting over this since I got my car.
Anyways, thought I'd give an update. I replaced my drivers mirror with the 2015 tonight. Took me maybe all of 15 minutes to do the actual assembly of the new mirror and the swap. The longest part was the 20 minutes I spent trying to pry the plastic clips that hold the door card on out of the door after removing the panel. Took it for a test drive and even though it's nighttime I can tell it's massively improved compared to the old mirrors. If it still vibrates at all, it's extremely slight, and not the massive shaking my old mirror did. I took it all the way up to 80 with no issues at all. I'll say after holding both assemblies in my hands off the car, the new style is much much sturdier in all regards. Even the mirror itself took a large amount of force to snap into place. I also noticed the bolts used to hold the mirror to the car were around 2x longer then the ones used for the old style:
(new ones on the left)
So now that I've confirmed it's fixed I'll be placing the order for the passenger side mirror and hopefully replacing it this weekend. I'll make a writeup on it for anyone that's interested in doing the same.