Add to the City of Miami Beach it's designated historical districts with the "historic=district" tag .
List of Historical Districts:
>Altos del Mar Historic District
>Collins Waterfront Historic District
>Espanola Way Historic District
>Flamingo Park Historic District
>Flamingo Waterways Historic District
>Harding Townsite Historic District
>Morris Lapidus/Mid 20th Century Historic District
>Museum Historic District
>Normandy Isles Historic District
>North Beach Resort Historic District
>North Shore Historic District
>Ocean District Historic District
>Ocean Drive/Collins Historic District
>Palm View Historic District

List of Sources:
*https://www.miamibeachfl.gov/wp-content/uploads/2018/05/Historic-Districts-05-17-2018.pdf
*https://miamibeach.maps.arcgis.com/apps/webappviewer/index.html?id=c891f52b033c474daa928fa815495f91

Add to the City of North Miami its neighborhoods. Use "place=suburb" to keep in conformity to the OSMWiki & the neighboring municipality north of it.

List of Neighborhoods:
>Alhambra Heights
>Arch Creek Highlands
>Biscayne Park North
>Central
>Central East
>Central North
>Central Northeast
>Central Northwest
>Central South
>Central West
>City Center of North Miami
>Golden Glades East
>Golden Glades South
>Johnson & Wales University North Miami
>Keystone Point / Amber Creek East
>San Souci
>Westside Sunkist Grove
>Westside Sunkist Grove North

Source Lists:
>Official City ArcGIS Map (Filter with condition of Neighborhood on the right sidebar) - https://northmiamifl.maps.arcgis.com/home/item.html?id=84a951faa11f42248e4f2a2011af3329#visualize

Add to the City of North Miami Beach its neighborhoods & sub-neighborhoods. Since there isn't a tag for "sub-neighborhoods", I suggest that the hierarchy be "place=suburb", then "place=neighborhood", as according to the OSMWiki

List of Neighborhoods & "Subs-":
Allen Park
Aqua Bowl
Corona Del Mar
TECO/Peoples Gas
West Dixie Industrial
Highland Village
Biscayne North
Biscayne South
City Center
Fulford
Government Center
University Park
Eastern Shores
Western Eastern Shores
Oakgrove
Breeze Swept
Carl Byoir
Fleeman Heights
Oleta River State Park
Pickwick
Skylake
Sunray East
Sunray West
Uleta
I-95 Row
Washington Park
Windward
Pan Uleta
Monticello

Source List:
>Official Cities ArcGIS Map: https://nmbpu.maps.arcgis.com/apps/instant/basic/index.html?appid=340e0169b32e4c939275f7b0db1d90ae
>Official City Map Boundaries with CRA (.pdf): https://www.citynmb.com/DocumentCenter/View/2112/City-Map-with-CRA-Boundries-PDF
>Official City Website with older image of the map: https://www.citynmb.com/634/Neighborhood-Improvements

Add middle greenery in between the east-/west-bound lanes of Sans Soucci Blvd

Bayfront Park in Miami Beach has not been completely mapped yet. There are missing footpaths under the tree awnings, playground areas that are missing their features, tree classification, grass areas to be marked, other plant decorations, light poles, drinking water stations, and signage.

Update businesses and restaurants in Aventura Mall. Assure location and floor level are correct.

Research and find boundaries to Arch Creek East Environmental Preserve path.

Survey Tot Lot land as first edits are incomplete.

Research and find official names to these tree artificially created islands. Survey via air on their beach/mangrove coverage and any man made structure on the island.

Add Parking spaces including resident reserved.