I don't have the type of files you speak of in "Problem #1", but I will try to do some research as time permits.
"Problem #2" is actually correctly documented. You need to read the second sentence more carefully. It is saying that you can view HDV video on the desktop "during preview", but says nothing about "during capture", which as you know it cannot do. I'm not sure why, but I'm guessing it's a technical issue that Adobe hasn't had time to deal with yet.
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