I had that exact thought a while ago and put together a little web app that makes that query for you called “easily missed”. There’s an iNat forum thread here: https://forum.inaturalist.org/t/a-tool-to-help-you-fill-local-data-gaps-easily-missed/37575
It uses a ‘doughnut’ shape rather than using iNat ‘places’, I did start making it configurable for using place ID’s but can’t remember how far I got… You can make radii larger or smaller to hopefully fulfil your needs
You can access the app here: https://simonrolph.github.io/easily_missed/
Hope this helps!