Summary:
The controller  is perfect for casual gameplay. Sadly it lacks functions that would allow for complete detachment from a keyboard for those using it. Hence, I changed the .txt file that saves the mapped controls in game.

Functions added:
Quicksave & Quickload - Press sprint and either START or BACK to quicksave and Quickload, respectively. This was the best combo I could think of, and it doesn't interfere with gameplay, because there is no other function even remotely similar to that combination.

Navigate Map Using D-pad - Another very simple and surprisingly absent function. Instead being forced to move the analog stick and cursor to the edges of the map to pan, the D-pad can now be used in its place.

Added Hotkeys - The diagonals of the D-Pad have been assigned as hotkeys, so you can now have six (6) hotkeys instead of two. Unfortunately having eight hotkeys would require the entire D-pad, which would prevent use of the Up-Down key to open and scroll through the favorites menu

I'm not sure if Anyone else has already figured out the method I used, but if so I applaud them for beating me to it. Feel free to use the file as you wish. It takes some orientation, but apart from the button IDs everything is explained in the file itself. 

Install:
This file should go in Data/Interface/Controls/PC. For those using MO, I'll create a proper file path so the installers work properly.

Any new ideas or improvements to the file are welcomed so others may try to customize their controls to their liking.

Just learned that a few other users uploaded "controlmap.txt" files before mine, so here are their files if anyone is interested.

More D-Pad Hotkeys for Xbox 360 Controller by entnvki
Move map with x360 D-pad by Blakrajder