Bluetooth and camera can be restricted but it depends on which device you are using. Restriction on bluetooth and camera is possible on certain Android devices. Like Bluetooth can be restricted on Samsung devices, where as Camera can only be restricted for certain devices.
For your third query, Afaria has provided various functionality for eg. if you want to remove certain applications. For Android, You can create configuration policy and in Application policy. Yo can select install/update/remove and give package name and select remove. In this way you can remove certain applications from devices.(Possible in case of samsung)
For removing files, you can create session manager channel and remove files from devices.