No function parameter in Assistant run

I was playing with the assistant feature, in my opinion, the assistant is a workflow builder that orchestrate the calling of functions – the retrieval + code interpret + user defined functions (UDF).

The issue is, the assistant only give suggestions based on the prompt of which UDF to call, but does not give any function parameter suggestions. Which makes the assistant looks like a toy.

Can we improve? Do you need someone to help generate the call graph?