Click here for a Live Demo!
I don't imagine Mosaic Dynamic View being very famous among Blogger users, as I rarely see any questions on the said template. But here's one for all you Mosaic users out there. When you hover over a mosaic post in Mosaic view, the post's thumbnail would pop-up and get slightly increased. With a little bit of magic code, you could make the pop-up thumbnails much larger, and appealing. And here's how.
Go to Dashboard --> Template --> Customize --> Advanced --> Add CSS --> paste the following code --> Press enter after the last character of the last line } --> Apply to Blog.