I assume most of us need a dummy-Alexa-routine anyway in order to prevent Alexa from answering with an error message (like “i don’t know how to…”).
So we could use this routine to trigger the openhab-binding, like in the workaround: A virtual switch that’s triggered by Alexa.
That would avoid the delays.
@J-N-K : Wouldn’t it be possible to provide the selection of a trigger item in the configuration-menu of the Alexa-bridge-thing? If the user selects a trigger item then the binding is activated by the trigger.
Or could you tell me which is now the URL to get the json? Then I could fix the workaround.