Au contraire, I think if this is going to be an OpenTechSchool conference the branding needs to be much stronger.
If this is going to be a community conference it needs to be one—all or nothing. Having some conference coincidentally also called Open Tech something will only further dilute our brand.
Also, no OTS logo, link, or CoC anywhere. Let's please not isolate this from the rest of us if this is a community event.
Update: I seem to remember the very purpose of this conference was to show the Dortmund area why free, volunteer-driven workshops are cool. This is very hard with the website as it stands.