In the table editor, it would be great if there was a view to edit or add multiple rows at once. Imagine it to be similar to how the trigger actions are where you can keep adding actions as you want before saving. Each new addition can be a column and its properties can be defined for every addition.
The ease of use and functions of the way actions are added on triggers is more or less the same way I think the column editor can be for tables.This will allow for table creation & editing to be faster/quicker.