I'm not sure going with double blind for Kubecon talk submissions is a good idea. In academic conferences, the paper itself is a good enough justification as it includes all the information needed to make a fair judgement. Kubecon submissions are short abstracts, and can't be judged the same way. Speaker's presentation skills, the projects he/she is involved in, the presentations given in the past should be taken into consideration. Unless we ask to include slides and transcript of the presentation as a part of the submission, there is not enough basis to do double blind voting.

A disclaimer: some of my talks were accepted to kubecon, some were rejected. As a speaker (and I don't consider myself to be a particularly good one) I'd really like to know the reasons behind both decisions.