I tend to lean against third-party/outside your website .

Currently for WordCamps we have

https://city.wordcamp.org/year

Like:

https://birmingham.wordcamp.org/2023
https://kolkata.wordcamp.org/2022

Could we not do something like that? Not necessarily with the wordcamp.org domain or with that domain.

https://toronto.wordmeetups.org and same for other cities and towns.

Heck, Toronto could use https://toronto.wordcamp.org for both the annual event and the monthly events.