I was a little less diplomatic than you when I raised this issue
Already 1/2 the questions in the new forum are coding related and a few get cross posted due to people trying to work out where they will at least get a response. I suppose the powers to be have a plan I just don't understand what that is yet .
That's a reasonable dividing line. I don't know the official reason myself,
but I'm glad there are now two forums because I will not lurk on the Flash
Builder forum because I don't write any of the code for Flash Builder and
therefore have no "expertise" there.
I do write code that goes in the Flex SDK and generally know who to bug
about other code in the SDK I haven't written so if one of my colleagues is
really busy and not paying attention to forum postings I can point them to
unanswered posts in their domain of knowledge.
I would offer that the dividing line is really whether you are having
trouble with the tools, including the code generated by the tools, or
whether you are having trouble understanding with the components and
infrastructure in the SDK.
One cross-over point would probably be profiling. Even though I didn't
write the profiler for Flash Builder, I have lots of experience using it so
if you are debugging memory leak or performance issues I would ask those
questions on this forums. If you are having trouble getting the profiler or
debugger to run, though, ask that on the Flash Builder forum.