On iOS, need a way to dismiss the keyboard that doesn't require tapping the "Return" key,

On Android, this is done with a tap gesture. On iOS this is usually done with a swipe down gesture.

When there are more messages in Chat on initial load, it should scroll to show the most recent ones.

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.