I'll save myself some time and just skip to The Correct Answer:

Made-to-order is the next growth opportunity. (Fast fashion has been played out.)

I'd watch someone like StitchFix or Trunk Club. They'll shorten the supply chain somehow (partnership, M&A, investment). Start offering made to order on select items. Strategically.

They'll need to do better measurements. Add MTailor features or equivalent.

Some are doing pop-ups, concierge. I'm now bearish on that approach. Mostly because of coronavirus. But I just can't think of any of the current players getting that kind of smart. I'll be delighted if someone proves me wrong.

I tuned out about 18mo ago. So haven't kept up. I'm told there's an MTailor like thing for sizing glasses.

I still don't have a clue how someone can do remote shoe sizing. Right now, everything's inferred from returns. But that's like diagnosing TBIs using phrenology.

I'm sure Amazon will continue to try any thing and everything. I haven't looked at their latest fashion effort. Mostly because whatever they do is a non-starter. Authenticity is table stakes for fashion, fast fashion, and therefore made to order. They'll certainly steal other people's lunch money, but are otherwise constitutionally incapable of anything new. Further, Amazon is entirely wholly hostile to authenticity. For them to pivot towards would invalidate their raison d'être. It could happen. I'm just betting against.

"...when applied to ~$200 items?"

You crack me up.