Don’t really k ow who you are talking about. But anyhow, I think there should be a broad range of models from small to plus, short to tall. Various body shapes would help also in determining how clothing would work on customers.
Women are not just a number or letter size, their shape counts a lot as to how things look on them.
Not saying a model for every instance of course, but a more overall variation in models would not hurt.
And, quit saying that a particular item “ works for everyone”, because no, there is nothing in fashion that does,
-Texas Hill Country-