As a developer for Google Assistant, I'm really annoyed by the lack of support for languages other than English

As a developer for Google Assistant, I am really very annoyed, by the lack of support for languages other than English for all things presented.

Dialogflow (and before that api.ai) had support for languages other than English, but when the new Action Builder was launched, this functionality was lost. This also caused problems if trying to migrate a project from Dialogflow to Action Builder.

As a user, the things that bother me the most are the lack of features on Assistant, for example, the continuous conversation was launched 3 years ago in English.

New products

Common Intents https://developers.google.com/assistant/app/reference/built-in-intents/common
Available only for: en-US, en-GB, en-CA, en-IN, en-BE, en-SG, en-AU

Vertical Intents https://developers.google.com/assistant/app/reference/built-in-intents/bii-index
Available only for: en-US

Custom intents https://developers.google.com/assistant/app/custom-intents
Available only for: en-US