here are some suggestions for making permissions better.
1. if a person has rights to another persons stuff full rights that is, then he/she should be able to edit land, there should be no multiples in building projects that they build together or for each other. They should be able to copy each others projects.
full permissons or rights should be just that.
2. Object permissions - why not put properties on the edit window pie shaped menu. say after you highlight the object, control 3 to get to the edit window or right click on the object then there is a pie shaped menu. there is a space there where properties could be set at time of creation without having to take the object and set the properties in your inventory.
3. Textures and such- when a person buys something he should have rights to all textures and all i mean just modifiable rights not transfer or sale rights. but the problem comes when making an object and putting someone elses texture on it even if it comes with rights the object's creator is called multilples which means even though i create it i cant copy it. this needs to be c hanged so the owner has rights to the object no matter what texture is put on it.