Additional fields and reporting options in ServiceDesk Customer Portal

In order to take full advantage of Customer Portal and to restrict Clients from accesing JIRA itself, I see some must have features in Customer Portal:
a) additional buttons, to Close, Re-open issue as described in JSD-40;
b) ability to add some extra information to issues when watching them from Customer Portal. Preferably it could be configurable to add any of fields which are in the issue in JIRA itself. Like Status, Resolution, Issue type, any Custom fields which we have defined etc.;
c) ability to view some basic reporting from Customer Portal. For example all of our clients pay quarterly SLA fee for lets say 100h of support. Any extra time goes by time-and-material scheme and is invoices extra. Our clients want to be able at any time to view how much time is already spent. Customer portal does not provide them with such possibility.