Choosing which endpoint to hit in dev console test
As everyone knows, it is possible to assign regional endpoints in dev console for skill, but testing them is really time consuming, because routing is very inconsistent. Even if I am from UK sometimes requests go to US.
Another issue is making sure that all endpoints work. Only way I found to test them consistently is by switching default endpoint, with other regional endpoints to get consistent results, which takes a lot of time.
My suggestion would be, that at least in the dev console, it would be possible to not only pick locale, when testing the skill, but also which endpoint skill should hit. This would speed up endpoint testing quite substantially and help build skills faster.