Complex UI are precisely the place where purely programmatic UI is a time saver. You are going to need to do A/B testing of UI, code review, testing, accessibi

Complex UI are precisely the place where purely programmatic UI is a time saver. You are going to need to do A/B testing of UI, code review, testing, accessibility/localization, and a crap ton of composability. All these are a pain when you have XML.