I have tried assistants in vapi and am happy about the output. But I had a lot of challenges with workflow. 1. workflow editor is not production ready. it has lots of small issues. 1.1 If I delete a connection, there is no way I can draw the connection again 1.2 if I want a recursive functionality for example check something and if not then go back to previous step - there is no way for me to draw such a connection 2. we cannot call MCP server from workflow 3. I cannot have parallel flows (cannot have LLM talk to user when a tool is being called) Tools also have lot of challenges. 1. I have a tool that I am unable to make any changes. it gives an error - Form has validation errors: Missing error message for field unknown (Missing fields: ref, message) Click the warning icon to run full validation There is no warning icon and I cannot find the issue. 2. I cannot work with an API call which expects a nested json as input How can I give this feedback to vapi so that these functionality is developed fast enough for me to wait.