Is there any particular reason we can't add the ability to add armor in increments say 0.1 sheets versus zero or 1?
The plates ARE the increments. There'd be no substantial difference except to make room for a lot more plates, weaken them, and move the decimal point.
shift + click: add in .1 increments PROBLEM SOLVED allow people to type in their armor level (say, 2.5 plates) PROBLEM SOLVED
Except this would make armor weight completely useless, and therefore the only armor worth getting is the most efficient resistance to weight ratio armor. The reason reactive isn't the ultimate armor is because its heavy weight means it can't be used very easily in all circumstances and has weight left over, or can't armor all sides, if you can just add 0.1 plates until you max out your weight that goes out the window.