I'm not sure if I can address your concerns around it. Combat Movement is one of ~4 stats we've allocated to outer armor pieces. Combat Movement, Resilience, Armor and Armor Weight. It would definitely help if you could see how the armor weight and armor are "improved" but they aren't added like normal bonus stats so separating the number back out from the item isn't so straight forward.
Are hoods an exception? They can get various resist bonuses like a belt or inner armor piece, but are also considered an outer armor slot. I think heavy armor should have various resists on it (mainly damage resist) to make it more effective.
On a different note: I think if people had more of the game's mechanics explained to them + know what its like even at level 10+, then armoring weight and filling slots wouldn't be such a huge deal:
-Only a tank really needs to worry about AC/defenses in a party the vast majority of the time, others can wear lighter armor for different bonuses (I love cms, not everyone else does, resilience is worthless imo... unless you could get 100 of it lol!)
-Armor limits increase and often you can find lighter weight, higher ratio pieces as you progress
-AC does help, but 'levels' are a huge factor in receiving and dealing damage (stick to fighting blues if you can, perfect sweet spot, greens and whites are ok, sometimes yellows, AVOID RED!)
-Damage resist is far more valuable than AC
-AC mechanics are largely unknown to most people, and the benefits of more AC are not well-noticed
-choosing appropriate prey based on levels and mechanics is very important
I remember you said you were working on a compendium. That should help a lot... if people read it! I will be happily soaking in its contents for sure.
It takes a certain type of 'adventuring spirit' to challenge the wilds and learn the ways of the world. Doing so can be very rewarding if you find your path, but those who lack this trait could easily be turned off to the game as is. I can see how spoon-feeding every bit of information could ruin the experience and at the same time, not having a clue starting out is just as perilous.