Asset Privacy (restrict access to assets)

Good Afternoon, 

Would it be possible to add a feature to restrict the access to the asset list & restrict powers.

For example 

Users assigned to site A will only be able to access assets assigned to site A. 

Users assigned to a type of asset can see all assets belonging to that type. 

Filters can be used to manage the lists, but currently it reduces buy in from employees when implementing the system with new users as adding filters etc. can seem bulky/not user friendly. 

Thanks