There is a mod out there called Armor Pockets which allows the expansion of a character's inventory through the creation of an item which is then equipped to the grid. In my mind, it is a perfect fit for the industrial armor. However, I am unable to add it. I am presuming that this is because the Industrial armor was given some sort of special category within the code. Is there any way to make them work together?

You're right: the industrial armor has its own equipment grid, so it's normal that other mods don't properly work with it.
Currently I'm implementing a setting with which you'll be able to decide if you want the division between armors and equipments, so I think I'll also consider this thing and postpone the update a little.
Thank you for the report.
_77Playmak3r

Now that you make me think: some new utility equipments would be a nice addon...

Better late than never. But I think you all know me at this point... :)

Version: 6.0.0

Date: 2024.04.05

Features:

- Added a new type of equipment for your power armors: personal backpacks. (See the dedicated section.)

Personal Backpack Equipment:

- It is a simple yet useful utility type of equipment (especially in long, heavy modded runs): it expands your inventory size.
  (And all tiers work like a belt immunity equipment.)
- They'll work as long as they're in the inventory, but they'll also drain a small amount of energy.
  (Your exoskeletons transport you and all that stuff in your inventory everywhere you go: Newton's II law guys.)
- The (base) stats and details are the following: (You can edit the bonus inventory size via settings.)
  - Personal backpack equipment mk1: 2x2 / 50kW / 10 bonus inventory size.
  - Personal backpack equipment mk2: 2x3 / 150kW / 20 bonus inventory size.
  - Personal backpack equipment mk3: 2x4 / 300kW / 30 bonus inventory size.