Here's what I'm thinking: let's say you want to edit all the Titles for all the pages in your project. Currently (as far as I know), you have to right click on the page, Edit Page Properties, go to the Title, Meta Tags tab, enter the title, click ok, and then go to the next page and do it all again. I think it would be very powerful if you could just bring up a (rudimentary) spreadsheet with the properties for all pages, and edit them right there in the spreadsheet. And you could do this, ideally, with any group of objects that shared common characteristics.
postyr, I guess I didn't make the description clear. By "spreadsheet-like" I meant a grid of information, the name of the page in column one, and the various attributes of each page in subsequent columns. Hence the term "spreadsheet-like".