Great addition. I agree, a relaxed fit can be just as flattering as a trim fit.
Some people take "relaxed fit" to extremes, a relaxed fit shouldn't look 2 sizes too big.
Size 42, what i would call regular fit, i can wear it with a t-shirt only or with a regular jumper:
Size 44, relaxed fit, i can wear two regular jumpers or a thick hand knitted jumper comfortably:
It is IMO possible to have a relaxed fit without a jacket looking massively oversized.
To me a relaxed fit is only about layering, not comfort.
Comfort is more related to pattern design than sizing IMO.