Pretend that both parents are involved and there is joint custody in some form (not necessarily 50/50, but joint legal and both have some custody of some sort).
Why do common sense things, as according to internet boards, need to be CO'd? Kid is in the ER... don't ned to inform the OP unless it in the order. Really? You need a CO to tell you that both parents should be aware that their child is in the ER?
ROFR.. why does it need to be ordered that parents should get time with their kid over a nonparent when a parent is available and wants to spend time with their child?
Phone Contact -a parent needs a CO to allow them to talk to their children when, if the parents were together, the parents would be talking to their kid everyday?
Physical discipline, not calling nonparents by parental titles, haircuts, showing up to parental things (conferences for one), medical appointments... there have been parents who have successfuly gotten things like this (and other similar things) because one parent (and maybe their spouse) think it doesn't matter what the only other parent things where their own kids are concerned...
Why not just use common sense and stop acting like a court order is the answer to everything?
On the flip side, so what if the CO doesn't prohibit certain things from being done by the nonparent, the order doesn't say you can either so why act as if the CO not mentioning you means you can do what you like? (This includes the parents who assume the absence of the SP in the CO means they are free to do certain things that they know can cause problems)