Not like I can afford one at the moment, but I can dream.
* 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.