For me the most important meta discussion is about the concept (and
vision) of DebConf. It seems that you have a different view, but you
have not yet wrote about your Vision of DebConf. Could you tell us more?
My vision is:
DebConf is Debian, it is a "steering conference", so Debian contributors
can meet to set goals, solve problems,.. in general to make Debian going
forward. So no need of huge public relation: our contributors will ask
other contributors to come (really no need to attract attendees with
earlier schedule and "important" talks).
Probably we need a Conference for professional (as we noticed in
DebConf15), but it should be a separate entity from the conference.
I would like to have more DebConf in developing countries (but we need
fancies hotels near airports for the professional conference).