Walking as default movement

I noticed that when you press shift it will zoom like in native but you will also slow down to walking speed instead of standard jogging.
Is there a way to make this walking speed your default movement and hitting shift let's you jog? I would prefer this for more immersion.

No: the walking feature is hard coded into the game engine, not possible to affect with the module system; character movement in multiplayer is an important and difficult thing to optimize. You can bind zoom to another key to use the walk control independently, but not the other way around (walk is hard coded to left shift).