>>For my first question, is it possible for a button in the toolbar to be created such that when clicked, it'd create a table with a precise look in the editor pane?

 

Yes. Please check the following examples:

 

Add custom buttons

 

How to create a custom button(client side) which displays a dialog?( C# | VB ) This example demonstrates how easy it can be to add your own client side buttons to the CuteEditor by creating a Cross Browser Modal Dialog Box.

 

 

>>For my second question, I understand it's possible to create a button in the toolbar to add rows when clicked, but can it add the row to the bottom of the table? Can functional buttons exist inside the editing pane so users can remove existing rows?

 

Maybe you can use the following button

 

Insert Row Below

insert a row below the selected row

 

However if you want to add row to the bottom of your table instead the selected row, you need to create a custom button to handle this.

 

Delete Rows

delete the selected row

 

You can use the above button the delete the selected row.

 

>>For my third question, can the editor restrict editing of any kind within certain elements, in my example inside one or more table cells, whilst allowing it for other elements?

 

It's possible. Please check the following article (IE only):