Looking for some information on a few things.

[Bluefin221]

I wonder if you guys would indulge me and perhaps point me in the right direction of the following items or whether its possible in vBulletin. I currently use 4.2.2 so please bear that in mind.

Ability to turn off adverts per usergroup basis.
Activity module which rewards for activity for posting and general site interaction.
Limit signatures on a per usergroup basis for example have text signatures for registered users but picture signatures for admin for example.
Some sort of ad management where I can see how many clicks a banner receives with the ability to place the banner where I want. Kinda like outgoing traffic monitor script.
Ability to auto demote folk from group when not paying paid subscriptions.

Any help would be appreciated.