Chosen Solution

I have a 2015 MBPR 13" with trackpad issues. On the other hand I have a 2014 MBPR 13" with cracked display. My idea is to take both the 2015 logic board along with its 2015 display and install it in/attach it to the 2014 lower case (with its 2014 battery, keyboard, trackpad, speakers etc.) Possible?

Unfortunately no, Apple is not that nice. There are little differences where the board sits and other cables connect.