Good choice to use ESRI here because the angle at which it was taken makes it easier to map accurate building footpritns. I recommend you use multiple sources to aid your interpretation. e.g. select Bing then ESRI via the background panel (b). You can then use the shortcut Ctrl+b to toggle between the last selected layer. All but one of footprints here have been appropriately squared. Hope this helps.
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            Published using OSMCha: https://osmcha.org/changesets/170167014
            