To be honest yours are the first complaints I’ve ever heard along these lines. Not to say you don’t have valid points but at the same time it seems like a vast majority of users have no problems with these issues.
The DVX100a is doing very well and I would imagine has reached the end of its development cycle for now. That said Jan and other folks from Panasonic do read these boards and improvements suggested here and elsewhere on the net are often implemented wherever feasible and realistic.
-Noah