Woah, so I was not expecting the tone I received here. So I’ll keep it blunt.

> If you don't participate in the AU community discussions, then I don't know how you expect to be involved.

Sorry, but I can't accept that for me to be a contributor to OSM, I need to be an active participant on a forum.
Everyone has the ability to see who are active contributors for a given area.
To neglect the actual maintainers of parts of a huge swathe of a region is negligent. Due diligence was definitely not undertaken. You've effectively vandalised the map based on your own preconceptions of what's appropriate, asking only in your own echo chamber.

An official classification of vandalism can be read here https://wiki.openstreetmap.org/wiki/Vandalism you guys have checked plenty of these boxes.

Stating how far back you had these discussions is completely arbitrary. 

> Firstly there's different ways addresses can be mapped, as a lone node, on the building, on the landuse representing the lot, and the import took the simplest option leaving it to local mappers to decide the best option for each location.

> […] it's also not incorrect for them to be simple nodes, so I reject that they require cleanup. You may improve if you like, but it's not required.

As a whole. You're correct. 
At the local level, you've fragmented the map style, and the data. Making these opinionated and egregious changes without notifying the local editors is wild.

The simplest option you've taken here, is evidently not the best one. Imposing your own decisions onto others is just self-centred.

I can't find a ledger on the wiki of why you made the decisions you made. Just what you did, and in part how.
No link to the original decision-making process.

How this was green-lit is insane.
How seemingly other random users became the arbiters of a large part of the map is insane.

2 decisions can be made by your cartel.
* Revert the changes. Reevaluate your script if you can't commit to making it properly factoring in risks that require "the community" to clean up the mess. Give up.
* Don't do anything. I'll take it up with the chain of command and get approved reverts treated as vandalism. Regardless of whether it was your intent, it is what it is.

3 possible outcomes could happen.
* Data gets rolled back. Import is abandoned completely by the brains trust that planned it.
* Or maybe you will try again successfully? Which evidently not likely due to the arrogance and cocksureness I'm reading in the replies here.
* My appeal fails to admins, and the vandalism persists. I'll have to waste time to write ANOTHER script to fix the changes in my area, as to ensure not to step on others’ toes.

I am legitimately flummoxed by how offended you are to even consider your multi-year effort a compromise to the integrity of the data in OpenStreetMap. Absolutely flabbergasting.

I'd love to read the forum thread to try and rationalise the decisions that were made here. Because from this side, it falls well short of being the best possible "conscious" decision.

Lmk what you wanna do.