Implement the 'Select All' checkbox type functionality so you could delete all delivery address or all purchasers. So you could 'Select All' and then deselect the two you wanted to keep and then press delete
Where a range of products are all likely to have the same Cross Sell then use a Department. e.g. if you are selling TVs with out aerials then you could use the Aerial department as Cross Sell on everyone. You would need to be able to add other pro...
Reporting is currently only available to Admins with access to /admin. Reports such as Account Activity would be useful for Agents and be accessible in the web site.