BU Business Analysis Eliciting Technique Discussion

For the website Netflix. There is need to update the app/site – and, at the same time, address some new requirements. Given your knowledge on elicitation techniques(Interview, Focus Group, Brainstorming, Document Analysis, Observation, Survey, Workshops, Interface Analysis) what practice(s) do you recommend and why? What challenges might be encountered when eliciting using that technique(s) and how might you – as the BA – be prepared to address them? Remind us what your app is, “invent” what the update might include in addition to your response to the post.