Try and come up with means to protect against introducing local stuff into global data areas

[AndrewSisley]

We currently have leaks a local element into the DAG (spotted, but not introduced in: #1235), it can potentially be a very painful/expensive form of bug and they may require very expensive datafixes in order to correct once the leak has been fixed.

As stuff like P2P and Schema Updates expands and gets used more regularly, we should invest time into coming up with a means to protect against this class of issue - perhaps something similar to the change detector, although I do not know what the solution may look like.