I don't care for the A pose for dynamic clothing. If you're fitting the clothing to a different or highly morphed figure, the T-pose is a lot easier. The scaling is straightforward in the t-pose.

I'd rather see the hair room improved than the cloth room. The cloth room works pretty well. The hair room has some serious bugs.

I think Rosity will support Dawn 2. Dawn 1 is included free in Poser. They're clearly working together now.