The  Conversational UI is a nice control , but it is limited. The Following will make life easier for the developer .

1) A Custom Template that can allow the user add buttons and customize the send button , like whatsup does, it has "Voice Note" , "Image Attachments" etc..

2) Also allow the user to be able to add images on the chat control itself.

This would allow the user to set advanced Entry properties and layouts.

One such use case was requested:

Set the Entry's MaxLength and add an inline "215/300" to inform the user of how many characters are left for that message.