Lock Collections and Objects

I'd really like to just have the option to lock a collection which would prevent the objects inside being removed or new objects added. I'd still like to be able to modify the objects and set up drivers etc but I just don't want to accidentally add new objects or move an object from that collection.

Similarly, I'd like to be able to lock an object, or multiple objects, in order to prevent them being modified in any way. I know you can make things unclickable but that's not quite the same as you can still modify the object through the properties panel.

We already have the concept of locking in the transforms, I'd just like to see that expanded to more things.