A)yes,you can use vshare script to fully paid video membership site.
In admin area = > Site Settings => Service Type => enable packages.


B) viewtopic.php?f=3&t=9


c) You can disable auto approve in admin area.Site Settings=> System Settings => Auto Approve => disable.

D) vShare powred by link removal go through http://buyscripts.in/vshare-branding-free.html.
No payment for adding logo on videos