Using the Lightning Web Components without the Salesforce back-end is a compelling idea. The design system is well tuned for standard business requirements (rich data-tables, modals, forms, etc.). If there's a good story around using those UI components without having to use the Salesforce back-end this could have value. The Salesforce back-end is a scary entity-attribute-value system coupled to an Oracle database on top of a layer-cake of legacy multi-tenant architecture constraints and years of Java/C code.