The app in question is used by retail employees at hundreds of locations to manage inventory. It runs on a tablet, has to work offline, and has a very dynamic U

The app in question is used by retail employees at hundreds of locations to manage inventory. It runs on a tablet, has to work offline, and has a very dynamic UI that has to keep thousands of complex relational entities in local state, and perform aggregate functions on them in real time. It's still a CRUD app, but it's very much the use case for a SPA.