Honestly I think I would have been happy with the 12" setup because it does retain the controls for HVAC, they are just on the sides. What I disliked about it most was those were the only controls, so no seat heat/fan controls unless you use the touchscreen. Android Auto on the 8.4" is a clustered nightmare because of Uconnect, so I'd be interested in seeing it on the 12" screen. I know maps would be nice on that setup. But overall, I just don't need a huge screen.
Honestly the thing I hate the most is the glossey bezel on either setup. Just why.
Did you check compatibility for your setup before you bought that one? Because if you go through CF an put in your truck they ask whether or not you have the 8.4" setup or the 12". I don't know if both are the same bypass, I did not check.