There's nothing wrong with single ways that enter the roundabout, in fact I'd say this is preferable than splitting the ways for a pedestrian island which I think is not necessary and incorrect.

Per https://lists.openstreetmap.org/pipermail/talk-au/2019-October/013032.html could you chime into the discussion please? Either here or on the mailing list.

direction=clockwise doesn't make sense on a lookout, it should be a number/cardinal direction or range. direction=*

Is this also information=office

changeset/75207707

It would be great to documented this tag on the wiki. Currently the only documentation is for the tag you removed osm.wiki/Proposed_features/aerobridge

When using a dual name "name:Mrs Macquaries Point / Yurong", then we need "name:en" to equal "Mrs Macquaries Point" so you can break down that dual name into each language.

It looks like you've changed that back here http://osmlab.github.io/osm-deep-history/#/node/13816944

If you check the history of https://osmlab.github.io/osm-deep-history/#/way/179207161 it looks like you've incorrectly removed the oneway tag, which was then fixed by someone else, and then you removed again, and it was fixed again.

Was this a mistake or intentional?

You've accidentally dragged the bicycle parking see https://osmcha.mapbox.com/changesets/68816300/, however I've fixed this now in changeset/75209417

To be honest I couldn't find this documented anywhere on the wiki but now I see https://taginfo.openstreetmap.org/search?q=destination%3Aref%3Alanes is more popular.so I've added some documentation to the wiki.

reverted see osm.wiki/Spam#SEO_Spam

reverted see osm.wiki/Spam#SEO_Spam

Fair point, although I wouldn't consider it a lane, I guess the access:lanes=no implies that it isn't a lane. I've changed it back.

What's bicycle=stupid mean here?

Thanks. For the two u turn restrictions relation/10088918 and relation/10088917. Is there any use since the from and to ways are the same?

Sure, building=office is just a sub type of commercial. It does sound like office is more correct here.

https://www.mapillary.com/app/?pKey=33_j2CiGoSuIPmoDONl23g&focus=photo

This does look like a fairly generic commercial building, what's the reasoning behind downgrading to building=yes?

The painted traffic island shouldn't count as a lane. I've changed this to have correct lane counts.

Did you mean to delete admin_level? government=* says it's a useful combination and I used it to say this is a federal level office.