Well, in the case of the front-end (like streamlit, gradio, etc) they send conversational messages in their own custom ways - this means I must develop against them each specifically, and that slows down any quick experimentation I would want to do as a developer. This is the client <> server interaction.
And then the conversational messages sent to the LLM are also somewhat unique to each provider. One improvement for simplicity purposes could be that we get a standard /chat/completions API for server <> LLM interaction and define a standard "messages" object in that API (vs the stand-alone messages object as defined in the OMF").
Perhaps that might be simpler, and easier to understand
OM