* 32GB RAM
* An Nvidia GPU
* Official EGPU support
* Include all the dongles one might need to make the transition to USB C. Right now, the dongle requirements feel like in app purchases/DLC
* Bring back Magsafe and the adapter they used to have
* Pull an SE and have A MacBook variant with the old pro body but newer internals and lower price.
I can't think of anything that the late 2012 models got really wrong. Maybe the strength of the cord on the mag-safe, which frayed for lots of people including myself.