Armor in the Movies and in Games

This week, I had two ideas collide. I finally finished The Mandalorian on Disney+ and received my order of the book, What is Dungeons and Dragons?. The book takes you through the process of how to create for not just Dungeons and Dragons, but many game systems, while the TV show follows the adventures of Baby Yoda and his newly minted father figure, The Mandalorian.

One thing that stands out in the TV show is how armor should work. Mando gets blasted and knocked around, losing bits and pieces all over the place. Like the real world.

Apparently, Mandalorians are the only Star Wars characters with fully functioning armor. I'd like to bring that into my D&D campaign.

In the original Unearthed Arcana book, there are a couple of options for this. First, there is field plate, which acts like hit points and a matching Magic Armor spell which does the same. I use a fusion of B/X and AD&D so this isn't too outside the box.

What I would like to do is create a system where all armor works to reduce damage. AD&D's armor class is nicely suited for this as 10 is a person's street clothes armor class, which is not protective. It stands to reason that I could simply create a table where dividing each minus to AC by 4 reduces damage by one.

AC
10 0/4 is nothing, so No Damage Reduction
9 is -1/4=.25 No Damage Reduction
8 is -2/4=.50 for 1 Point of  Damage Reduction
7 is -3/4=.75 for 1 Point of  Damage Reduction
6 is -4/4=1.00 for 1 Point of Damage Reduction
5 is -5/4=1.25 for 1 Point of Damage Reduction
4 is -6/4=1.50 for 2 Points of Damage Reduction
3 is -7/4=1.75 for 2 Points of Damage Reduction
2 is -8/4=2.00 for 2 Points of Damage Reduction
1 is -9/4=2.25 for 2 Points of Damage Reduction
0 is -10/4=2.50 for 3 Points of Damage Reduction

This table is nice because it naturally places armor in groups: none, minimal, medium and heavy, which is kind of what the game books do anyway. The table requires division and rounding, which is easy enough on the brain to do on the fly or I could simply make an index sized card for quick reference.

What do you think?