I would like to initiate the vote for KIP-55. The KIP details are here: KIP-55: Secure quotas for authenticated users <https://cwiki.apache.org/confluence/display/KAFKA/KIP-55%3A+Secure+Quotas+for+Authenticated+Users> .
The JIRA KAFKA-3492 <https://issues.apache.org/jira/browse/KAFKA-3492>has a draft PR here: https://github.com/apache/kafka/pull/1256. Thank you... Regards, Rajini