Being somwone who spent alot of time in the paint booth back in fm6 & fm7
One of the biggest game changes for livery editors would be a cut feature being able to us any shape and cut out off another shape
Example Letters
Imagine doing the letter H this would require 3 layers
The cut tool would reduce it to 1 layer by using a square and cutting out the top and bottom
I know Horizon has masking but that create additional layers
Many thanks