Shopware 6 is excellent for single-vendor eCommerce, but it lacks core features required to build true multi-vendor marketplaces like Amazon, Etsy, or Alibaba. I propose a Marketplace Engine as a core module or premium extension with:

Vendor Accounts: Sellers can register and manage their own products, orders, and store settings from a dedicated dashboard.

Split Payments & Commissions: Automated payment distribution using Stripe Connect, PayPal Payouts, etc., with platform-level commission control.

Product & Seller Reviews: Customer reviews for products and vendors with moderation workflows, boosting trust and SEO.

Search Personalization: Intelligent search with vendor filters, ratings, and behavior-based ranking. Ideal for large catalogs and vendor competition.

Additionally, I recommend official Next.js storefront support for better performance (SSG/ISR), React developer adoption, and edge rendering via Vercel. While Shopware PWA is great, Next.js would accelerate frontend development and modernize the developer experience.

Use Cases:

A retailer wants to build a regional platform where independent artisans can sell directly to consumers, with the platform managing logistics, payments, and reviews.

An eCommerce enterprise needs a scalable platform for thousands of vendors offering competitive pricing, search-filtered by seller, and user-driven trust signals.

These features would position Shopware as a strong alternative to Magento or Shopify Plus for multi-vendor businesses and open doors to large-scale SaaS and marketplace use cases.