[09:58] <gry> hi, what is the correct channel supporting users in making their own new ubuntu spin or flavour?
[13:20] <guiverc> gry, I'd try a linux channel as flavors are applications made after minimum of two releases (ie. one year+) with a team etc.. as per https://wiki.ubuntu.com/RecognizedFlavors which isn't what you appear to be seeking or capable of (flavor has a specific meaning); you're wanting to create a linux system as I see it.  (my 2c)
[13:22] <guiverc> maybe intersting; https://ubuntuunity.org/posts/ubuntu-unity-becomes-an-official-flavor/    I'd start by reading blogs by people who've done it (eg. the creator of Makulu Linux blogged about the Makulu respin when Ubuntu based; it's not a flavor.. but respin unrelated to Ubuntu, just Ubuntu based)