It would be awesome to pull the ospf cost per port into LibreNMS, the data is already in the mib, just need to add it to the database.
Sample query
/usr/bin/snmpbulkwalk -v2c -c public -OQUs -m OSPF-MIB -M /opt/librenms/mibs:/opt/librenms/mibs/brocade udp:IP HERE:161 OSPF-MIB::ospfIfMetricValue