So needed, specially if we can assign a quota per brand or user

This is really needed. That was I don't have to worry about team members messing up already finished ready to go project or deleting them etc. Ability to limiting / locking access dependent on permission level would be great.

yes this is the most basic feature for team

This would be so amazing! Would help so much. :-)

Yes, this is essential!

Yes, this will be very helpful.