ok, just some clarification for you all concerning the decker-rigger relationship
you can NOT combine a cyberdeck and a RCC ... they are not compatible ... a cyberdeck can not control multiple drones like a RCC and a RCC can not be used for hacking.
but you can combine a cyberjack (a cyberjack is basically a turbocharged modified datajack) and a control rig and then choose to use a cyberdeck OR a RCC depending on what role you want to focus on if you want to be able to do both decking and rigging
yes, anyone can still use a RCC to be a drone bunny, but you just have to rely on the drones pilot if you don't have a control rig and yes anyone can control a single drone via issuing commands via commlink or similar device
yes a rigger can provide matrix support and act as the team PAN protector by using an RCC since it possesses Firewall
and yes a rigger can attempt to control drones that are not jumped into but don't belong to them via matrix actions