Unless I'm seriously lacking in dexterity, I find that the new dashboards in 7.0 are really difficult to create. It's just impossible to drag worksheets into the space I want. The old version was a bit fiddly but I managed to get something that looked fairly good most times. Have just abandoned a 7.0 dashboard attempt and have to resort to copy and paste into Powerpoint.
I'm sorry to hear you are having issues with this. One thing that I've found to be useful for deciding where a sheet will go on a dashboard with 7.0 is using the lightly shaded area that shows where the worksheet will go before it is dropped.
Perhaps describe what you'd like to see in the Ideas section!