Correction to comment!
I think the long thin 'building' sections may simply be connecting corridors, possibly only a roof. From satellite views I would not be bothered mapping them. I would map each of the larger buildings separately and leave those thin connections for someone on the ground.

Hi,
way/705223732 intersects with itself
See https://tools.geofabrik.de/osmi/?view=areas&lon=148.23912&lat=-8.76357&zoom=18&opacity=0.75

Comment: The think long 'buildings' may simply be connecting corridors. possibly only a roof. From satellite views I would not be bothered mapping them. I would map each of the larger buildings separately and leave those connections for someone on the ground.

Hi,
way/339078604 - landuse=commercial intersects with itself.

See https://tools.geofabrik.de/osmi/?view=areas&lon=146.91020&lat=-36.08539&zoom=18

Hi,
Problems.
https://tools.geofabrik.de/osmi/?view=areas&lon=145.00206&lat=-37.84478&zoom=18

Here each of the member ways are tagged as buildings. And so is the relation - this is redundant.

A simple node tagged with both railway=station and public_transport=station. See railway=station
and public_transport=station
If you want then a simple way around the entire station complex, not just the buildings, can be done.

The relation can then be deleted.

Next .. the buildings tagged as roof, these should also be additionally tagged with layer=1 - this way they do not conflict with anything that may be mapped on the ground (as layer=0 - which is the default).

Hi,
Problem. With multipolygon relations the outer members should not share ways.

See https://tools.geofabrik.de/osmi/?view=areas&lon=144.99529&lat=-37.78863&zoom=18

In this instance I would tag each of the member ways as buildings.

Then I would have a simple node tagged with both railway=station and public_transport=station. See railway=station
and public_transport=station
If you want then a simple way around the entire station complex, not just the buildings, can be done.

The relation can be deleted.

The changeset comment can be improved - as well as say where, say what your doing...

The creek may be better 'seen' on the LPI base map.

Hi,
You tagged way/667059306 as sport = picnic ... 'picnic' is not a sport... I have removed this tag. I have added the 3 individual pitches for each sport.
For the 'picnics' I would suggest locating a more suitable area and adding a node with the tag tourism=picnic_site.

Keep mapping.

Hi,
One of these sports appears to be basketball not soccer;netball. Some are too difficult for me to determine from Bing.

Hi,
There is a problem with relation/9845963 Sunshine Plaza, see https://tools.geofabrik.de/osmi/?view=areas&lon=153.08615&lat=-26.65507&zoom=17

If it is all one building then a single simple way will do.

Looks good. Thanks.

Hi,
Moving node/4032839889 some 62 meters has caused a flight of stairs to cross themselves...

I have reverted the movement and unlinked the node from the platforms.

Problem in relation/9740788.
See https://tools.geofabrik.de/osmi/?view=areas&lon=137.57700&lat=-33.03414&zoom=18

Not fixed... no action?

Problem with relation/9736954
See https://tools.geofabrik.de/osmi/?view=areas&lon=137.54670&lat=-33.02906&zoom=18

This relation/9736957 has shared segments.
See https://tools.geofabrik.de/osmi/?view=areas&lon=137.54670&lat=-33.02906&zoom=18

Hi,
Problem with relation/9836701. See https://tools.geofabrik.de/osmi/?view=areas&lon=150.82730&lat=-33.75910&zoom=18

Problem with relation/9841582 - dupicated segment. See https://tools.geofabrik.de/osmi/?view=areas&lon=151.40686&lat=-33.27766&zoom=18

Hi,
Way: Perth Busport (552513578) needs some work... looks like it has 3 'building parts'... but they have tags for a building as well.. very confusing.

Hi,

About Carss Park.
According to the LPI Base Map the park does not stop where the trees are but extends further. And I would include the car parks as part of the park too. In short, look at the LPI Base Map for the park boundaries and try and resolve that to any signs on the ground.

Note: I have tagged the swimming pool as 'disused' due to its closure caused by the water leaks.

Hi,
There are still problems with these relations around Melbourne
9693070 is one of them, looks like 5 in total.
see https://tools.geofabrik.de/osmi/?view=areas&lon=143.60761&lat=-39.75450&zoom=6&opacity=0.71