+1 for this as well. I usually put long paragraphs and even images inside tables, and both the previous and current table functionality make it difficult and wonky to work with (i.e., have to do horizontal scrolling as @Ruq said when the rows are long, and sometimes the tables don’t render at all in live preview when working with images).
I’d imagine a built-in WYSIWYG table editor (perhaps similar to the one that Panda (Bear alpha) has) would make this process much smoother.