More than a feature, I would say that the reliability of the platform is the most valuable aspect.
Red Hat Fuse offers straightforward setup and implementation, known for its stability and reliability, with seamless system integration aided by a wide range of connectors. Users benefit from its containerization and Apache technology integration, alongside outstanding support and training options. However, improvements in containerization, pricing, documentation, and learning curve are needed, as well as enhancements in monitoring and stability for optimized use.