bcc and send to a third party

Can we have the option to bcc (in a message/reply) and also an option to send an email to a third party from the request.

On occasions we need to bring people such as the ISP or a cabling company into the request and that would be useful. At the moment we hit the reply button and change the email address.

Multi technicians to a case would be useful. Today I took over a request from a colleague who was out on site so I changed the technician to me so that I would see any incoming emails (in my open cases), but if I forget to reassign it back to him, then he will not be altered to the fact that there has been traffic in his ticket.

Thanks.