This is the dobok in question, is it not? If so, I like it. I think that it is a good change.
I don't particularly like it but if we are moving towards having individualized dobok, then I would simply allow competitors to wear whatever they wanted, within reason. For example, gymnastics and figure skating don't have strict rules on what color your performance costume should be, I don't think.
Regarding earlier comments about the curriculum needing to be addressed instead of the dobok, personally, I find nothing wrong with the curriculum as it is. If there are things that specific kwanjangs feel should be there, then there is nothing stopping you from working those things into your own curriculum. Personally, I think that hard and solid training in the existing curriculum is plenty.
I agree.