Laravel has artisan command php artisan route:cache that caches all routes in order to increase app speed.

I am not sure how significant speed increase that would be but we could cache is similar way commands and events.

Consider the case where on one server is bot and web access point, admin dashboard for example. route/botman.php is loaded (processed) on every page hit.

If a developer wants to quick access some fields in a conversation, he can extends the Conversation class and add those fields. In case those fields needs to be instantiated, the extended class can implements a "initialize" method that will be executed before the run method.

Add to User.php:

class User implements UserInterface
{
    /** 
    * @return string
    */
    public function getLanguageCode() {
    }
}

The function MUST return the IETF language tag of the user's language if available, null otherwise.

Note:

• Telegram returns exactly the IETF language tag of the user's language
• Facebook returns the locale in the form en_US, in such case the function MUST return the first two chars

Botman should support the share_contents field for the button of type element_share.
Here's the facebook documentation: https://developers.facebook.com/docs/messenger-platform/reference/buttons/login#example_body
and here an example of the payload:

"buttons": [
    {
      "type": "element_share",
      "share_contents": { 
        "attachment": {
          "type": "template",
          "payload": {
            "template_type": "generic",
            "elements": [
              {
                "title": "I took Peter's 'Which Hat Are You?' Quiz",
                "subtitle": "My result: Fez",
                "image_url": "https://bot.peters-hats.com/img/hats/fez.jpg",
                "default_action": {
                  "type": "web_url",
                  "url": "http://m.me/petershats?ref=invited_by_24601"
                },
                "buttons": [
                  {
                    "type": "web_url",
                    "url": "http://m.me/petershats?ref=invited_by_24601", 
                    "title": "Take Quiz"
                  }
                ]
              }
            ]
          }
        }
      }
    }
  ]

Some drivers have a deep linking mechanism, that allows for passing additional parameters to the bot on startup. It could be a command that launches the bot — or an auth token to connect the user's Telegram account to their account on some external service.

class IncomingMessage
{
    /**
    * @return string
    */
    public function getParameter() {
    }
}

This function MUST return the parameter passed in the link.

Note:

1. Telegram: https://core.telegram.org/bots#deep-linking
2. Facebook: https://developers.facebook.com/docs/messenger-platform/discovery/m-me-links

In order to facilitate App distribution the Slack Driver can support the OAuth flow, here's the Slack docs: https://api.slack.com/docs/oauth

Before activating public distribution, please remove any hard-coded information from your app, such as OAuth tokens and webhook URLs. Going forward, you should authorize your app for use on your workspace with OAuth, just like anybody installing your app on their own workspace would do.