There are several missing dependencies in offline repo. Meaning that these dependencies are required to install a feature in fuse. List of these dependencies:
https://fuse-qe-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/job/fuse-7.7-offliner/1/artifact/jbossqe-fuse/karaf-related-tests/features-test/miss_dependecies.txt
information about features: https://fuse-qe-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/job/fuse-7.7-offliner/1/console