1. No,Not in the stock code
2. Not sure. If you are currently removing them from the group I would assume they can't access the watched topics that 2010 has access to.
3. You could setup payments via mail in the subscription area of the control panel,since you are currently not using the paypal payment already in ubb. Then you just enter the payment with the duration and they will expire on their own. And they loose access automatically.
